In this Nov 26, 2020 photo, Napoli's French midfielder Tiemoue Bakayoko goes for a header during the UEFA Europe League Group F football match Napoli vs Rijeka at the San Paolo stadium in Naples. (FILIPPO MONTEFORTE / AFP)

AC Milan have signed midfielder Tiemoue Bakayoko from Chelsea on a two-year loan with an option to make the move permanent, the clubs said on Monday.

The 27-year-old Frenchman moved to Chelsea in 2017 but failed to establish himself as regular, spending much of his time out on loan including a previous stint at Milan during the 2018-19 season when he made 42 appearances in all competitions.

He spent the last two seasons on loan at Monaco and Napoli, respectively.

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"AC Milan is delighted to announce the signing of (Bakayoko) from Chelsea FC on a two-year loan, which could turn into an obligation if certain conditions are met," the Serie A club said in a statement.

Milan, who beat Cagliari 4-1 on Sunday, have won both their league games so far and sit fourth in the Serie A table.