He currently plays for Foggia, wearing the number 40 shirt. He plays primarily as a Defender. His current market value is estimated at 50K €.

His most recent move was a Loan from Manfredonia to Foggia on 2025-06-30.

Throughout the Italian Serie C 2025-2026, Giovanni castaldi featured in 21 matches, averaging 0 tackles, 0 interceptions, and 0 clearances per game, while blocking 0 shots per game.