 In his debut season the club won the 1983–84 Serie C1 championship under manager Arrigo Sacchi, and gained promotion to Serie B.After three seasons at Fiorentina he was signed by Internazionale in 1988 for £3.6m.In his first season at the club, Berti formed a notable midfield partnership with Lothar Matthäus, and was part of a team which won the 1988–89 record breaking Scudetto by an 11-point margin under manager Giovanni Trapattoni, losing only twice, and setting a Serie A points record.