Fulham manager Roy Hodgson isn't sure that key midfielder Jimmy Bullard will still be at Craven Cottage at the end of next month.
The 30-year-old, who was called into the England squad for last month's friendly win against Germany, has been in excellent form since returning to action in January following a 16-month spell on the sidelines.
Negotiations over extending Bullard's Fulham contract have begun, but Hodgson admitted: "You don't want to lose your best players. Jimmy has a year-and-a-half left on his contract and I hope he stays.
"But I have to be realistic in that if a top player is in form and doing well then he will be coveted by the other clubs.
"I can't give a stonewall guarantee that we'll be able to hold onto him. I hope we can, but we'll have to wait and see what happens in the transfer window.
"I suppose the fact he's getting international recognition has forced the contract talks along.
"In the beginning he was asked to show some patience and wait until the end of this year.
"Negotiations have opened up and it's an ongoing process. I'm sure that we'll see a solution in the near future but I don't want to be put on the spot over the timeframe."