Manchester United have reportedly made an approach for Porto midfielder Joao Moutinho.
Moutinho has been linked with a move to the Premier League for some time, with Chelsea and Tottenham both keen, and Liverpool also believed to be considering a bid for the Portugal international, who was in superb form for his country at Euro 2012 last month.
Weekend reports had suggested Man Utd were showing interest in the 25-year-old as a possible alternative to Tottenham playmaker Luka Modric, and according to The Sun, the Red Devils have contacted Porto with a view to signing the attacking midfielder.
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.
Modric remains United manager Sir Alex Ferguson's top transfer target, but the Scot is believed to be prepared to look at alternative options as a result of Tottenham refusing to sell for less than £40m - a valuation which has also led to Real Madrid cooling their interest.
Chelsea also see Moutinho as an alternative to Modric, while Spurs, who will in the next 24 hours appoint Andre Villas-Boas as their next manager, are keen on signing the Portuguese as a possible replacement for Modric.
Chelsea first became keen on signing Moutinho when Villas-Boas quit Porto to take charge at Stamford Bridge last summer.
Last month, the player admitted he was keen on playing in the Premier League.
"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."