Sevilla coach Antonio Alvarez says they can handle the sale of Luis Fabiano.
Fabiano is the subject of serious interest from Olympique Marseille.
"I am concerned but I am not going to lose any sleep over it," Alvarez said.
"We are talking about an exceptional player but if the deal is profitable for the club... there's nothing you can do.
"I will say what I have always said, if Luis Fabiano leaves then someone else will come.
"We'll have to bring in a player who can guarantee success, who knows Spanish soccer and who is a proven goalscorer."