Sporting CP coach Marcel Keizer admits they face losing Bruno Fernandes.
The midfielder has been strongly linked with Manchester United this summer.
Fernandes added fuel to the fire over a potential move by appearing to break down in tears after Sporting's friendly against Valencia in Lisbon on Sunday.
"We'll see if we can keep our players and then we'll see what we do," said Keizer after the game, which Sporting lost 2-1 to the La Liga outfit.
"I hope he [Fernandes] stays, of course, like everyone else at Sporting, but we don't know."
