 Complete the following phrase:  Following Lazios and AC Milans relegation to Serie B due to their involvement in the 1980 match-fixing scandal, he was called upon by the Milanese squad and transferred to the side, becoming a first-team member alongside captain and defender Franco Baresi, as well as Filippo Galli, during a dark period in Milans footballing history, under manager Nils Liedholm. He made his Milan debut on 24 August 1980, in Serie B, in a 10 home win over Catania. Milan won the Serie B title that season to return to Serie A, with Tassotti emerging as one of the clubs best performers.ref name198081: il Milan in Serie Bref Despite winning the Mitropa Cup the following season, Milan were unable to remain in Serie A, finishing 