Diakite has now been axed by Lazio's Europa League squad.
"We were expecting that, considering they bought Michael Ciani and clearly the contract situation affected the decision," Ulisse Savini told Radio Sei.
"I don't think there is an interest from Juventus and we certainly do not already have an agreement with anyone.
"Diakitè will do everything possible in order to play football. If he hasn't managed it in January, then we'll see what the situation is.
"He wants to prove to the directors that he is worth the figure he asked for."