Manchester United manager David Moyes says it is unlikely that he will enter the transfer market again before Friday's deadline.
Moyes broke United's transfer record to bring Juan Mata to Old Trafford last week and the Spaniard made an impressive start to his career in the north west on Tuesday night.
Mata played a part in the build-up to both of United's goals in their 2-0 win over Cardiff.
Moyes conceded after the game that his team are still far from the finished article, but that does not mean he will be rushed into completing another big-money deal before the end of the window, however.
When asked about the possibility of any further signings this month, Scot said: "I would say no. I have said no, I don't think I will, but if something happens I will soon let you know."
Moyes was just as coy when it came to talk that Wayne Rooney is on the verge of extending his contract at Old Trafford.
"I am sure we will keep you up to date with that as well," he said.
On the basis of Tuesday's performance against Cardiff, the £37million United shelled out on Mata looks to be money well spent.
The Spaniard gave the midfield an air of calm fluency thanks to his energetic display just behind Robin van Persie.
The Dutchman evoked memories of his title-winning form last term when he pounced on a rebound from his own header to beat David Marshall in the sixth minute.
With substitute Rooney also returning to action after a four-week lay-off, Moyes thinks he has the ingredients to turn United into world-beaters again.
"The results with them (Rooney, Van Persie and Mata) will get much better," the former Everton manager said.
"We need to get them in the right physical condition now to make that happen.
"To see Robin van Persie and Wayne Rooney back on the touchline would have been enough to give everyone an uplift but then to have Juan Mata as well... He made our best chances in the opening 20-30 minutes so I was really pleased."
Cardiff impressed, but they still prop up the Barclays Premier League.
Manager Ole Gunnar Solskjaer, 11 years a United player, said: "I am pleased with our overall performance but we lacked that goalscorer who wants to score a goal, we lacked that oomph."
Solskjaer said a deal to sign left-back Fabio from United had been completed, but a loan deal for Wilfried Zaha has still not gone through.
If United do sign someone - who could it be?
Manchester United - January transfer targets
Manchester United - January transfer targets
Bayern Munich defender Dante would be interested in a move to the Premier League according to his agent - and United have been monitoring him. His current club could yet convince the defender to stay however.
2/21 Alberto Herrera
United tried to sign the Athletic Bilbao midfielder in the summer but his botched signing rather summed up their ineffective dealings in the transfer market. With a £30m release clause, he remains an available, if perhaps slightly pricey, option in January.
3/21 Mario Mandzukic
An old-fashioned target man, Mandzukic has been linked with a move to United recently after Bayern signed Robert Lewandowski. However, Lewandowski won't arrive until the summer - meaning United might have to wait.
4/21 Will Hughes
Will Hughes has emerged as a transfer target for Manchester United boss David Moyes after a series of superb performances have catapulted Derby County into the upper reaches of the Championship.
There is no doubt that midfield is the area most in need of reinforcements for David Moyes and another man linked with an Old Trafford switch is Colombian international Guarin. Valued at around £15m, the Inter Milan man's versatility would undeniably improve things for the Red Devils.
6/21 Bilal Basacikoglu
Bilal who, you might ask, but the young Turkish winger is an emerging star at Dutch side Heerenveen and a player to catch the eye of David Moyes. Aged just 18, he may be a player more for the future than to immediately turn United's fortunes around.
7/21 Steven Defour
For many years the Belgian was linked with a move to Old Trafford and having been a target of Moyes' at Everton, the midfielder could very well be the man brought in to improve things for United. Played for Porto recently against Atletico Madrid in a match watched by Moyes - did he catch the Scotsman's eye?
Reportedly one of United's main January targets, although the Atletico Madrid man is said to be very happy in the Spanish capital, particularly given his team's success this season. Might take some persuading to join Moyes' stuttering side.
9/21 Ilkay Gundogan
Undeterred by the modest success of their last Dortmund purchase, United could also be after midfielder Gundogan. Wouldn't be cheap but certainly an improvement on their current crop of players. Dortmund are understood to be keen to tie him to a new contract.
10/21 Sami Khedira
Another strongly linked with a Manchester move, the German international's recent serious knee injury makes a January switch unlikely but he could be brought in from Real Madrid further down the line.
11/21 Ross Barkley
Manchester United bought the last exciting teenage prospect to come through Everton's ranks so understandably they have been linked with the precocious Barkley. Knows Moyes from his Everton days, but will he join the Scot in making the switch from Blue to Red? Everton have already stated they will not sell in January.
12/21 Fabio Coentrao
After nearly signing on deadline day last summer, there's every chance that Moyes could return for Real Madrid's second choice left-back should he fail to lure another top name. Not really the priority though considering the good form of Patrice Evra.
13/21 Eliaquim Mangala
United could do with strengthening at the back and French defender Mangala is reportedly another to have caught Moyes' eye. However with Porto wanting all of his £40m release clause, he seems a rather pricey option.
14/21 Diego Costa
Rooney and Van Persie have spent too much time this season on the treatment table - so more options in attack would be helpful. Who better then than a failed target of eternal rivals Liverpool and a man whose goals have fired Atletico Madrid to the top of La Liga? Highly unlikely Costa would wish to leave in January - and even less likely Atletico would let him.
15/21 Blaise Matuidi
Another midfielder strongly linked with an Old Trafford switch, the PSG man could be available for as little as £7m which would represent great value for money. Not the sort of signing to instil renewed confidence at Old Trafford - but perhaps one of the more likely arrivals.
16/21 Andrea Ranocchia
Another man being mooted as a defensive recruit for Moyes, the towering Italian has fallen out of favour at the San Siro and would surely jump at a move to Manchester United.
17/21 Everton Ribeiro
The 24-year-old Cruzeiro man believes he could be the solution to United's midfield woes after being linked with a move there saying: 'I would fit in any part of the midfield. I would do well as a playmaker to support the attack.' It remains to be seen whether he'll get the chance to prove it with a January move.
18/21 Miralem Pjanic
The Bosnian midfielder has excelled at Roma this season and would certainly be a good signing for United. Previously linked with moves to Arsenal and Spurs, a move to Manchester would mean no Pjanic on the streets of London. Roma have confirmed they have received offers for the Pjanic.
Miralem Pjanic The Bosnian midfielder has excelled at Roma this season and would certainly be a good signing for United. Previously linked with moves to Arsenal and Spurs, a move to Manchester would mean no Pjanic on the streets of London.
19/21 Kevin Strootman
Another Roma star thought to be wanted by United, the Dutch midfielder is however highly valued by Roma chief Rudi Garcia which may prove an obstacle to any move.
20/21 Toni Kroos
The Bayern Munich midfielder is stalling on a new contract, raising hope he could be prised away. However, he's been integral to the multi-trophy winning side and it seems highly unlikely the German champions will let him go.
21/21 Alex Teixeira
If their pursuit of Strootman falls through, another man reportedly being lined up is Shakhtar midfielder Teixeira. The 23-year-old impressed against United in his side's recent visit to Old Trafford.
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