Chelsea have completed the signing of teenage French midfielder Lesley Ugochukwu from Rennes for £23.5m.
The 19-year-old moves to Stamford Bridge after agreeing a seven-year contract, with the option of a further year.
Ugochukwu is predominantly a defensive midfielder and made 60 senior appearances for Rennes, who finished fourth in Ligue 1 last season to qualify for the Europa League.
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Chelsea have completed the signing of midfielder Lesley Ugochukwu from Rennes for £23.5m