Lazio president Claudio Lotito insists Sergej Milinkovic-Savic is not for sale this summer.
The Serbia midfielder is being linked with Manchester United and PSG.
But Lotito said: "Milinkovic is not for sale. I rejected bids of 140 million euros for him (a few years ago).
"I will only ask Sergej what he wants to do if we get an important offer from a world club."
The midfielder has a deal with Lazio to 2024.