Charly Musonda has made 11 appearances for Real Betis
The Belgian midfielder, who moved on loan to the La Liga side in January, has impressed in Spain.
Musonda has made 11 appearances for Betis and the club's president, Angel Haro, wants to keep the teenager in Spain for another year.
Haro told Spanish newspaper Marca: "There are interesting players that we are trying to keep, for example Musonda, for which we have already spoken with Chelsea and there is optimism."
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