Empoli president Fabrizio Corsi knows they risk losing coach Maurizio Sarri.
Sarri has been linked with a move to AC Milan.
"I extended Sarri's contract after three consecutive defeats, then the positive results arrived," Corsi told Tuttomercatoweb.
"So of course I can't imagine a future without him. He might have ambitions of more important clubs, but I can say he won't find what he has at Empoli elsewhere.
"The prestige of a top club could attract him, but the success of a Coach also depends on how prepared the players and club are to follow his vision."