Jose Luis Palomino has been acquitted of doping offences after testing positive for an anabolic steroid in the summer, his club Atalanta said on Monday.
Italy's anti-doping agency NADO cleared Argentine defender Palomino after he claimed to have accidentally taken the steroid. He can now play for Gian Piero Gasperini's side.
"I'm very happy! I had faith in the justice system and now I can turn my attention to being back with my teammates," Palomino said in a statement on Atalanta's website.
Palomino, 32, had been suspended since July following his positive test.
Atalanta face Lecce and Inter Milan before Serie A breaks for the World Cup, returning in early January.