Chelsea target Alex Sandro is the subject of a "substantial offer" from an unnamed club and Juventus insist they will not stand in the left-back's way if he wishes to leave Turin.
Reports suggest the Bianconeri have received a bid over double the 26 million euro (£23m) fee they paid Porto two years ago for the Brazilian.
It was Blues manager Antonio Conte who signed Sandro, who has won back-to-back league and cup doubles at the Juventus Stadium, and they could be reunited this summer.
Juve are keen to hang on to Sandro - who would provide competition for Marcos Alonso and Cesar Azpilicueta at Stamford Bridge - but will not deny him a move.
Chief executive and general manager Giuseppe Marotta told Corriere dello Sport: "A substantial offer has arrived.
"We have no intention of selling anyone but if a player decides to leave, as has happened in previous years, then at the end of the day he has to go."
"We don't keep anyone against their will, but at the moment there are no such situations and I hope nobody will leave."
