Andrew Driver could be the latest first-team player to leave Hearts - with Major League Soccer side Houston Dynamo expressing a firm interest.
The Oldham-born winger, who has made more than 150 appearances for the club since coming through the youth ranks, is out of contract at the end of the season and could make an immediate move from Tynecastle given the club's need to cut their wage budget.
With the MLS transfer window now open ahead of the start of the season, the 25-year-old could leave for a small fee.
First-team coach Gary Locke has revealed that Driver's future is uncertain as he prepares to discuss the move overseas.
Locke told Hearts TV: "There's a possibility that Andrew could be leaving. We are still waiting to find out what the situation is.
"He has been a fantastic lad to work with but we are not 100 per cent sure what's happening at the moment.
"If he stays, great, if he goes, we wish him all the best. But at this moment in time it's still pretty much up in the air."
Hearts placed a £4million price tag on Driver in summer 2009 when Burnley attempted to sign the player for a second successive summer, while Coventry and FC Twente were also linked with moves.