The Mexico international landed in Milan on Saturday and is scheduled to undergo his medical this morning ahead of signing forms.
Gimenez is joining Milan in an outright transfer worth €32m plus bonuses.
Swamped by fans yesterday at the hotel where he was staying last night, the striker was asked, "Why did you choose Milan?".
The player replied: "I'm really happy. Milan is a very, very big team".
With Gimenez's arrival, Alvaro Morata is leaving Milan today for a loan deal with Galatasaray.