Following Giuseppe Rossi's ligament damage to the same knee that kept him sidelined for two years, the Manchester City forward has been linked with a return to his former side
The Florence-based club are still reeling after the knee injury suffered by star striker Giuseppe Rossi, who sprained ligaments in his right knee in Sunday's 1-0 win over Livorno.
Jovetic moved to City from Fiorentina in the summer but has struggled for first-team football behind the likes of Sergio Aguero, Alvaro Negredo and Edin Dzeko - making just three Premier League appearances this term.
"If there is not the quality there [in January], then it is useless to act," Della Valle told reporters.
"Let us hope that Rossi's injury does not limit our chances this season.
"Jovetic and [former Fiorentina striker Adrian] Mutu? We remain friendly with them, but they are difficult. 'JoJo' is impossible, the regret is there.
"The anger is still so much for the injury to Rossi."