That's the claim of Italian transfer expert Gianluca di Marzio, as Real Madrid continue to be linked with the Serbia midfielder.
Di Marzio told RMC: "I do not think he will leave.
"Lazio would have no way of taking a substitute. I already read about disagreements, a possible sale of the Serb would lead to (Simone) Inzaghi's resignation."
Inzaghi is under pressure after losing the opening game of the season at home to Napoli.