Dele Alli says beating Barcelona at Nou Camp would rival Tottenham's greatest feats under Mauricio Pochettino

The England international is optimistic after scoring his 50th Spurs goal in victory over Leicester City

Tottenham midfielder Dele Alli believes victory at Barcelona would rival their very best results of the Mauricio Pochettino era.

Spurs go to the Nou Camp in the Champions League on Tuesday knowing victory would seal a spot in the knockout stage. They are level on seven points with Inter Milan, who host PSV Eindhoven, in Group B.

Alli scored his 50th goal for Tottenham in Saturday's 2-0 win at Leicester City and, after Spurs failed to win their opening three group games, the midfielder feels victory in Spain would be one of the squad's greatest triumphs.

“It would definitely be up there,” he said. “They are one of the best teams in the world, they've got some great players and as a kid you dream about playing at the Nou Camp and we're going to go there and give it our best shot.

“I've had a bit of a cold but it's not too bad. A cold won't keep me out. We're ready. It's going to be another difficult game but they're the games you want to be a part of, playing one of the best teams in the world and some of the world's greatest players.

“You want to be challenging yourself and we're going there with the mentality that we can win and we have to believe.

“It's going to be difficult but we have to go there and give it our best.”

Alli doubled Tottenham's lead on Saturday after Son Heung-min classy first-half opener. Victory lifted them to third in the Premier League and boss Pochettino insisted they can win in Barcelona.

Alli reached 50 goals for Spurs at the age of 22 by scoring against Leicester (Getty Images)

“We have a chance,” he said. “Yes, I believe. I think we believe, that's the most important thing, and then what happens happens, we are going to enjoy the game.

“Of course [I thought we were still in it], then we won against PSV and Inter, two victories, and then the third is possible of course.

“It's always an exciting place, they're one of the best teams in Europe and I know it's amazing, very exciting to play against them.

“But at the same time it's going to be tough to play there, we're going to play one of the best teams in Europe and the only way that we can be happy will be to win the game, and that will be tough."

Without the injured Jamie Vardy, missing a second game with a groin injury, Leicester were toothless.

Kelechi Iheanacho was jeered when he was substituted but boss Claude Puel said he was not thinking about striking reinforcements in the January transfer window.

“It's always difficult, the transfer window,” he admitted. “My focus is to prepare for Crystal Palace because we need points, we need to go up in the table.

“It will be a tough game but it's important after the loss to keep a good mentality and a clinical edge.”