The former Boca Juniors defender arrived only last week at the Sicily club.
"I immediately got a great impression of the Coach and my teammates. I'm so happy to be here," said the former Boca Juniors defender.
"The Barbera is a stadium that really reminds me of the Bombonera with Boca. When I saw 12,000 people here to watch the first training session, I simply couldn't believe it.
"It's a sign of the great passion and love there is for this team. I can't even begin to imagine what will happen at the first game!"