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).

A deal to sign Gittens was struck late last month and Dortmund revealed on Thursday that the young winger was on the cusp of signing for Chelsea, who are reported to have paid an initial £48.5 million ($66.2 million) with a further £3.5 million ($4.8 million) in add-ons.