The Atalanta boss was in charge of Cellino's Cagliari side.
The current Atalanta boss left Cagliari after earning them promotion in 2004.
Lazio’s search for reinforcements in attack has led them to Valencia’s Helder Postiga.
Lazio are considering stepping in to sign Fulham's Swiss international defender Philippe Senderos, according to the latest reports.
Many Lazio fans have taken to social networks to urge their team to lose against Juventus next weekend in order to damage rivals Roma's title chances.
Inter midfielder Fredy Guarin appears to have turned down a move to Lazio, which may signal that he has his heart set on joining Chelsea.