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.

Arsenal are set to complete the signing of Chelsea winger Noni Madueke, with the England international leaving the Blues' Club World Cup squad to finalise the transfer