Bosnia international Lulic, who scored the only goal of the game in Sunday's victory over bitter rivals Roma, is reported to be on the radar of Europa League champions Chelsea and Lazio's Serie A rivals Juve.
But the versatile left-sided player was quick to point out that he remains under contract for another four seasons, although he admitted it was impossible to rule out a possible move.
He told Dnevni Avaz: "All I can say at this moment is that everything that is being written is pure speculation.
"But, of course, we will see what will happen in the summer.
"What counts the most in this moment is the fact that my contract with Lazio runs for another four years.
"So, for now, I'm focused on doing the best for my national team and then we will see what happens after the holidays."