French club Rennes have submitted a €20 million (£17m/$23m) bid plus add-ons for Sassuolo midfielder Jeremie Boga with Chelsea set to reap the rewards of any potential transfer.
Blues director Marina Granovskaia recently turned a €15m (£13.5m/$18m) buy-back clause on Boga into a shrewd sell-on clause that will see Chelsea claim 10-15 per cent of any agreed fee.
Sassuolo have set an asking price of €30 million for Boga with Serie A trio Atalanta, Napoli and Roma all circling for the 23-year-old, who has impressed over the past two seasons in Italy's top-flight.