Manchester United are reportedly the latest club showing interest in signing Porto midfielder Joao Moutinho.
Moutinho has been linked with a move to the Premier League for some time, with Chelsea and Tottenham both keen, while reports on Saturday had suggested Liverpool are also considering a bid for the Portugal international, who recently impressed at Euro 2012.
But according to the Sunday Mirror, United are also tracking Moutinho as a result of his superb performances during the Euros, as manager Sir Alex Ferguson looks to strengthen his midfield.
Like Chelsea, United are keen on signing Tottenham playmaker Luka Modric, but Moutinho, 25, is seen as an alternative option.
Spurs are keen on Moutinho as a possible replacement for Modric, who looks almost certain to leave White Hart Lane this summer.
Chelsea first became keen on signing Moutinho when Andre Villas-Boas quit Porto to take charge at Stamford Bridge last summer, and the Portuguese is expected to be confirmed as Tottenham's new manager in the next few days.
Moutinho has a £40million buy-out clause in his contract, but clubs are hoping Porto could be tempted to sell for a fee in the region of £25m.
Last month, the player admitted he was keen on playing in the Premiership.
"Every player wants to experiment with different leagues," he said.
"Right now I'm happy because I am playing in one of the biggest in Europe. But if a good opportunity arose we'd have to see.
"The Premier League? I can only say it's one of the best leagues in the world - but I have not spoken with any club."