Ryan Giggs has backed Wayne Rooney and Adnan Januzaj to take the World Cup by storm.
Rooney will miss a third successive game for Manchester United on Sunday due to a groin problem, although Giggs is sure the England forward will be fit enough to go to the World Cup.
But while Rooney is a household name opposition teams will be well aware of, Januzaj is something of an unknown threat.
The 19-year-old may have had a good season with United, but he is yet to earn an international cap. The midfielder only pledged his allegiance to Belgium - the country of his birth - last month.
David Moyes used Januzaj sparingly towards the end of his tenure as United boss as he feared the teenager would break down due to exhaustion.
But Giggs has no qualms about Januzaj heading to Brazil with his new international team-mates this summer.
"Adnan is the kind of player who could light up a World Cup, whether that is starting games or off the bench," said the United interim player-manager, who started Januzaj in the 3-1 win over Hull on Tuesday.
"I was excited when he got the ball the other night - when I was on the pitch and on the bench.
"He floats with the ball effortlessly. He is just one of those players you love watching."
Fifa World Cup 2014: Facebook announces its squad for Brazil
Fifa World Cup 2014: Facebook announces its squad for Brazil
1/23 Cristiano Ronaldo - Portugal
The Ballon d’Or winner is set to sparkle in Brazil after scoring four against Sweden in the play-offs, and the Portuguese star lead the way in the Facebook squad with over 80m likes.
2/23 Lionel Messi - Argentina
Closely following his long-time adversary and rival to the best player in the world claim, Messi weighs in with 56m likes – though he is a significant way off Ronaldo. Can he show up the Real star in Brazil?
3/23 Kaka - Brazil
Left-out of Luiz Felipe Scolari’s Brazil squad, Kaka still cuts the mustard in the social media world, coming in with a creditable 27m following his Facebook page. Unfortunate for the Brazilian midfielder and former player of the year, the only reason he’ll be going to Brazil this summer is for a holiday back to his homeland.
4/23 Andres Iniesta - Spain
Spain’s midfield maestro struck the winning goal in the 2010 final to send Spain into a frenzy of celebrations. Can the Barcelona great do it again, or is the 2014 World Cup a step too far for Vicente del Bosque’s side?
5/23 Wayne Rooney - England
The first (and only) Englishman to feature in the top-23, Rooney checks-in level with Andres Iniesta with 19m likes on his Facebook page. The talented Manchester United forward will once again be tasked with firing England to glory – talk about the weight of a nation on your shoulders.
6/23 Mesut Ozil - Germany
The £42.5m Arsenal signing may have had an up-and-down season since making his Emirates debut last year, but he still ranks solidly just 1m behind Rooney and Iniesta. Ozil is also part of a much-fancied Germany side that needs to deliver on its potential sooner rather than later.
7/23 Neymar - Brazil
Having caused a stir over his overall transfer fee in his move from Santos to Barcelona, Neymar also racks up the millions on Facebook, and the 22-year-old is under pressure to deliver a World Cup triumph on home soil.
8/23 Iker Casillas - Spain
Having been left out of the Real Madrid side that will contest the La Liga title in the coming weeks, Casillas has remained a key figure in getting his club to the Champions League final, and with Voctor Valdes already ruled out of the tournament, the 32-year-old is expected to lead the Spanish into battle once more.
9/23 David Villa - Spain
Villa may no longer be a shoe-in for the Spain starting line-up, but he for this squad as 13m will be following his escapades in Brazil through his Facebook page. The Ateltico Mardird forward could head to South America with another Champions League crown to his name, should Atletic overcome their fierce rivals Real.
10/23 Ronaldinho - Brazil
No longer in the running for the accolade of the world’s best players, Ronaldinho is still doing his thing back home in Brazil, and the 34-year-old, who currently plays for Atletico Mineiro, still enjoys a following of 17m fans.
11/23 Gerard Pique - Spain
One of just two defenders in the squad, the Facebook 23 is certainly attacking minded, and Pique will have to take on a fair share of responsibility to make sure things are kept tight at the back. However, the Barcelona centre-back will have 11m supporters cheering him on the social media waves.
12/23 Karim Benzema - France
Benzema has formed a formidable relationship with Cristiano Ronaldo and Gareth Bale this season that has helped the Real Madrid star wrestle back his starting berth from Arsenal’s Olivier Giroud. France will hope they can rely on Benzema to fire them to another World Cup success.
13/23 Sergio Ramos - Spain
The Spain defender may be notorious for his ill-discipline and habit to see red, but he has also struck some crucial goals on both the domestic and European stage for Real this season. Travelling as the second of two defenders, the Spaniard will have to team up with his compatriot Pique to keep the rest of the world at bay.
14/23 Diego Forlan - Uruguay
Not quite the force he was at the last World Cup, Forlan still has a nose for a goal, as well as a Facebook like. The Uruguayan maintains 4.7m followers through social media, and along with Luis Suarez and Edinson Cavani will be responsible for building on his side’s third place in South Africa four years ago.
15/23 Radamel Falcao - Colombia
The Colombian striker may be an injury doubt for the World Cup due to a serious knee injury, but we’d take the risk and include him as the Monaco forward brings 8m fans with him.
16/23 Mario Balotelli - Italy
Everyone’s favourite Italian bad boy makes the list with an impressive 6.6m fans. Never far from the headlines, you can expect fireworks from Balotelli in Brazil.
17/23 Angel Di Maria - Argentina
The Real star may be the quieter figure in Carlo Ancelotti’s lethal attack, but the winger is set to take a prominent role for Argentina alongside the likes of Messi, Aguero and Gonzalo Higuain.
18/23 Sergio Aguero - Argentina
The Manchester City striker could head to Brazil with a second Premier League winners’ medal in his trophy cabinet, but a World Cup triumph would surely surpass that accolade. Argentina stand a good chance of winning too – no team from outside South America has ever triumphed on the continent.
19/23 Victor Valdes - Spain
Sadly, Valdes won’t be in Brazil due to an anterior cruciate ligament injury that has already ended his season, but if we could we’d take the goalkeeper regardless. His 5.8m followers will be able to console him as he watches at home from with the rest of us.
20/23 Luis Suarez - Uruguay
The PFA Player of the Year will back his chances of World Cup glory with Uruguay as he heads back to South America, and the Liverpool striker’s 5.6m fans will be cheering him on in the hunt for silverware this season. Let’s just hope his World Cup doesn’t end like the last, as his goal-line handball against Ghana in the quarter-final will be remembered for all the wrong reasons.
21/23 Robin van Persie - Netherlands
While the striker hasn’t enjoyed his best season at Manchester United, the sole Dutchman in the squad will be confident that the Netherlands will have an impact on the latter stages of the competition.
22/23 Mario Gotze - Germany
Gotze’s debut season at Bayern Munich has seen him clinch a Bundesliga title and could yet yield another German Cup, but the midfielder would love a World Cup crown to his name. All this, and he’s still just 21-year-old. Think how many likes he could add to his current total of 5.2m!
23/23 Pedro - Spain
Selection for the squad went down to the wire, but it’s Barcelona and Spain winger Pedro who scrapes in by the skin of his teeth. Weighing in with 3.4m likes on Facebook, Pedro has 23.5% of the following that his (new) team-mate Cristiano Ronaldo holds. While he’s got some work to do on the social media front, Ronaldo will be deeply envious of his World Cup and European Championship victories.
Belgium are outsiders in the running for World Cup glory, but with the likes of Eden Hazard, Romelu Lukaku, Januzaj and Simon Mignolet among their ranks, they have the potential to reach at least the quarter-finals.
England will hope to reach that stage in the tournament too. And they will rely heavily on Rooney to get there.
Rooney is England's most dangerous player. His power, pace and eye for goal will worry Italy, Costa Rica and Uruguay, who make up Group D.
But the fact remains that the 28-year-old has yet to live up to his billing on the global stage.
Rooney's previous two World Cup campaigns have been hampered by injury, and hie best international tournament came 10 years ago, when he burst onto the scene at Euro 2004.
Giggs is sure Rooney can be a leading star for England this summer though.
"Wayne is at the peak of his powers," said Giggs, who has played alongside Rooney for 10 years.
"Wayne is a top player. He is at a good age.
"I know for a fact he can't wait for it.
"He has had a fantastic season and he is ready to make an impact."
Rooney broke a metatarsal in April 2006, limiting his impact at the World Cup in Germany and four years later he suffered an ankle injury just before the tournament in South Africa.
The former Everton striker recently had a spell out with a toe injury and he now has a groin complaint.
The injury will not stop the striker scoring goals at the World Cup, according to Giggs, who is also confident that Phil Jones will be named in Roy Hodgson's 23 on Monday despite a shoulder injury.
"Wayne will be fine for the World Cup," Giggs said.
"It was just a little groin strain. He is fine. He has done all the work in the gym.
"He trained yesterday. He will be fine. He is going away next week and working on his fitness as well so it has probably helped him.
"The injury has probably done him a favour."
Sunday's trip to Southampton will be Giggs' final game in charge of United.
When asked whether his short reign had given him more of an appetite for a career in management, Giggs said: "Yes.
"Sometimes you probably think I could do without it and other times it gives you so much pleasure.
"It has definitely helped me prepare for what will come after my playing career."
Giggs remains undecided on what he will do next year.
He would like to be Manchester United manager one day, but he does not hold it against the board for looking to appoint a more experienced candidate this summer, like Louis van Gaal, who could be appointed next week.
"There is no major disappointment," Giggs said.
"I have plenty of time (to manage)."
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