Charles De Ketelaere made his debut in Saturday's friendly win against Vicenza.
The €35m signing from Club Brugge was given 15 minutes at the end of the 6-1 win.
De Ketelaere came on for Brahim Diaz and certainly made an impact, scuffing a potential goal with his first touch, then he should've earned a penalty for handball and hit the side-netting.
Rolfini gave Vicenza a first minute lead before Milan took control as Rafael Leao, Junior Messias, Ante Rebic twice and Fikayo Tomori struck, with Vicenzo also scoring an own goal.
AC Milan: Maignan; Calabria, Kalulu, Tomori, Theo Hernandez; Bennacer, Tonali (Krunic 51); Messias (Saelemaekers 58), Brahim Diaz (De Ketelaere 75), Leao; Rebic