Milan and Inter are on alert after reports Jonathan Bamba requested a transfer from Saint-Etienne.
The 21-year-old right-sided winger has just returned from loan spells at VV Sint-Truiden in Belgium and Angers in Ligue 1.
He scored the winner in the opening game of the season against Nice last week, but his contract is due to expire in June 2018.
According to L’Equipe, Inter and Milan sent scouts to view Bamba’s performance in that match.
They face competition, as Porto, Newcastle United, Sevilla and Crystal Palace have also shown interest.
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