Ex-Milan goalkeeper Sebastiano Rossi is under investigation for cocaine possession.
The shot-stopper had several phone conversations with an Albanian drug dealer who was arrested this week.
Rossi is under investigation by the Emilia Romagna authorities along with 17 other people.
It is not his first trouble with the law, as in 2011 Rossi was arrested for punching a plain-clothes policeman in a bar in Cesena.
Now 50 years old, Rossi still holds the all-time Serie A record of 929 minutes without conceding a goal.
He wore the Milan jersey from 1990 to 2002 and retired in 2003, having won five Scudetto titles, three Italian Super Cups, one Intercontinental Cup, two European Super Cups and the Champions League.
Rossi still occasionally plays in the Milan Legends team.
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