Gimenez will be the latest member of CONCACAF to join the Rossoneri's ranks, following suit with U.S. internationals Christian Pulisic and Yunus Musah.
The Mexican will replace striker Alvaro Morata, who is set to depart the club just six months after signing from Atletico Madrid. The Spaniard's rumored destination is Turkish side Galatasaray, with both an 18-month loan and a $16.2M transfer being touted for his services.
Gimenez, meanwhile, will look to bring his goal-scoring ways to Milan as the Italian club looks to compete for silverware in the coming months under the leadership of Sergio Conceicao. Still alive in the Coppa Italia and the UEFA Champions League, the Rossoneri will look to claim one of the two tournament trophies, considering they are out of the running for a Serie A title, as they sit 7th in the table, 19 points out of first.
At Feyenoord, Gimenez made 105 appearances across all competitions, and scored 65 goals. During the month of January, the 23-year-old scored six goals in five matches across all competitions, too, as he now moves to Italy amid a period of good form.