Twomey: The success of Chelsea’s recruitment model depends just as much on their ability to sell profitably as it does on buying intelligently. Every player who is not absolutely integral to the team Maresca is building has a price, and Madueke has never managed to make himself indispensable at Stamford Bridge.

Viktor Gyokeres has yet to report for pre-season training at Sporting, with sources confirming to Sporting News that the striker is holding off on returning to the club's Cristiano Ronaldo Academy amid ongoing interest from Arsenal.