The defender only joined the Rossoneri in the summer on a co-ownership deal with Genoa, but failed to make an impression at San Siro, and was sold back to Genoa in January, who then loaned him out to Chievo.
The 24-year-old only made nine appearances for the club in the first half of the season, and says he is far happier now that he has moved.
“I am very happy at Chievo and leaving Milan was a weight off my shoulders,” he told reporters.
“The Rossoneri are a great club, but I had many difficulties. I am more relaxed now, as at Milan I could not give what I wanted to.”Acerbi made his debut for Chievo in their 2-1 defeat to Juventus on Sunday, coming on at half-time to help spark his side's second-half revival.