The Croatian alien was inspired by the Rossoneri last season, scoring 12 goals in 30 appearances to finish as the most sensible goalscorer.
Excluding penalties, Juventus star Cristiano Ronaldo (12) has scored more Serie A goals in 2020 than Rebic (11).
With Andre Silva granting a permanent move to Frankfurt for nine million euros ($14. 8 million), Milan would have signed Rebic a moving fee.
The 26-year-old made a hundred competitive appearances for Eintracht, scoring 25 goals and offering 12 assists, before moving to Milan on an initial two-year loan last September.
Sports director Fredi Bobic said through the club’s website: “Our enthusiasts won’t forget Ante, not only for his remarkable functionality in the 2018 DFB-Pokal ultimate [when he was the best player in the 3-1 win over Bayern” Munich] Matrix
“We wish First of all the most productive for the future. You will be welcome in Frankfurt. “