Chelsea have made England Under-21 international Jamie Gittens their seventh signing of a busy transfer window, paying Borussia Dortmund an initial £48.5m for the winger.

Performance-related add-ons present in the deal could reportedly take the total package to £55m, with Gittens penning a seven-year contract with the Blues.

Chelsea attempted to sign Gittens before the Club World Cup began last month, but Dortmund's chief executive, Lars Ricken, said the Blues had failed to meet their valuation of the Manchester City academy product.

However, ahead of the Club World Cup quarter-finals, Ricken confirmed an agreement had been reached for Gittens to join the Premier League side, and on Saturday, Chelsea announced the deal was complete.

"It feels great," Gittens told the club's website. "It’s a great feeling to join such a big club as Chelsea.

"I can't wait to learn from everyone in the team and to push myself to the max here. It's an amazing feeling."

Gittens' arrival follows the acquisitions of Joao Pedro and Liam Delap from Brighton and Ipswich Town, respectively, while Chelsea have also finalised pre-agreed moves for Estevao, Dario Essugo, Mamadou Sarr and Kendry Paez.

Gittens made 32 appearances in the Bundesliga in 2024-25, scoring eight goals – double the total he managed across his first three campaigns in Germany.

He attempted 160 dribbles and completed 77, both team-high figures for Dortmund in the 2024-25 Bundesliga, while he also created 21 chances as they salvaged a fourth-place finish after a poor start.

Gittens was limited to just 14 minutes across Dortmund's first four games at the Club World Cup, and he was in attendance for Chelsea's 2-1 quarter-final win over Palmeiras on Friday.

He will, like Estevao, be ineligible for the Blues' semi-final against Fluminense on Tuesday, with his competitive debut potentially coming against Crystal Palace on the opening weekend of the Premier League season. 

Gittens' former club Dortmund, meanwhile, will face Real Madrid for a place in the Club World Cup semi-finals on Saturday.