The England Under-21 international has moved to Stamford Bridge on a seven-year contract. Here is what he will offer Maresca's

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.

We asked for your thoughts on the signing of Jamie Gittens for £48m plus add-ons from Borussia Dortmund. Here are some of your comments: Ayoola: Hopefully, he lives up to expectations. He's the kind of player who fits into Chelsea's project.