Sky Sources understand Cardiff City forward Ross McCormack has handed in a transfer request.
McCormack put pen-to-paper on a new contract with the Bluebirds earlier this month, committing to the Championship club for another four years.
However, it is understood that a summer move could be in the offing, with the likes of Hull City said to be interested.
Indeed, the Scotland international has previously admitted to his interest in one day playing in the Premier League.
McCormack signed for Cardiff from Motherwell last year and netted 21 league goals in 38 appearances during his debut season at Ninian Park.
Cardiff chairman Peter Ridsdale told the club's official website: "Ross McCormack telephoned me today to indicate that if another club came in for him, he would wish to leave.
"This is three weeks after signing a new four-year contract! I told Ross that we had not had any bids for his services and unless he knew of interest that we were unaware of, then he would remain a Cardiff City player.
"I wish to make it clear that if this is a method for any other club to believe that Ross would be allowed to leave Cardiff City 'on the cheap', that this will not be the case.
"If Ross subsequently leaves Cardiff City, it will only be if we receive an offer from another club that matches our valuation of the player."