Gittens completing an international transfer means five per cent of the fee paid by Chelsea, or £2.4m, is distributed as a solidarity payment to those clubs with a hand in his development up to the age of 23. The catch here is Gittens is still only 20, so Dortmund also retain a majority of that sum.

Chelsea has completed the signing of English winger Jamie Gittens from Borussia Dortmund for a reported initial fee of 48.5 million pounds ($66 million)