Chelsea is to sign English winger Jamie Gittens from Borussia Dortmund. That's according to the German club which said that “all parties involved agreed in principle” in Florida and that contract details were being finalized.

Dortmund improved considerably as a collective following the appointment of Niko Kovač, who adopted a system that reduced the need for a touchline winger of Gittens’ ilk. Width was instead supplied from wing-backs, while speedster Karim Adeyemi performed a more prominent role in Kovač’s attack.

Chelsea have agreed a deal to sign English winger Jamie Gittens from Borussia Dortmund, the Bundesliga club said on Thursday, with the 20-year-old set to sign a seven-year contract in a move reportedly worth 55 million pounds ($75.