Manchester United are eyeing unhappy Barcelona fullback Jordi Alba.

Sport says United see the Spain international as a replacement for Luke Shaw.

United boss Jose Mourinho is a fan of Alba and would be happy to extend the Spanish contingent inside his squad.

Alba, 28 this week, revealed yesterday his current frustrations at Barca.

"I do not have the confidence I would like to have at the club," he said. "When I was not playing, Luis Enrique did not give me any explanations and now it is still the case. All players want only one thing: to play regularly, to have playing time."