Lazio sporting director Igli Tare says they won't block Sergej Milinkovic-Savic from leaving if he wants to.
However, Tare insists the midfielder must submit a transfer request.
“The player's desire is crucial," he said.
“Generally speaking, if a player thinks that their time is up and wants to go somewhere else, it shouldn't be a problem.
“Eras come to an end. Just look what happened to Napoli this season. The fact he stayed in Rome for five years is because he has strong links with the city and club.
“When there was some temptation, a bit on our part, a bit on his, we never went all the way.
“However, things must be assessed at the end of the season."