 In late 2018, Abate temporarily assumed the role of a centre-back in the wake of an unexpected severe injury crisis that struck the team's defence.In this role, he was praised for his performances by the club's coach, Gennaro Gattuso, and various Italian media outlets alike.On 19 May 2019, Abate made his final home appearance for Milan in a 2–0 win over Frosinone at the San Siro stadium.