

Upon joining the Blues, Rüdiger was assigned the number 2 shirt, formerly occupied by Branislav Ivanović.

On 9 July, Chelsea completed the signing of German international defender Antonio Rüdiger from Roma for a £29 million transfer fee. On the same day, Abraham completed a season-long loan move to Premier League club Swansea City. On 4 July, academy product Tammy Abraham signed a new five-year contract with Chelsea, keeping him at Stamford Bridge until the end of the 2021–22 season. Palmer also completed a season-long loan deal with newly promoted Premier League club Huddersfield Town, returning to the club after helping them to gain promotion the previous season. Also on 3 July, young English midfielder Kasey Palmer signed a new contract with Chelsea, keeping him at Stamford Bridge until the end of the 2021–22 season. On 3 July, after an illustrious career with the club spanning 22 years, former Chelsea captain John Terry signed for Championship club Aston Villa.

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Also on 1 July, Chelsea announced the signing of Argentine goalkeeper Willy Caballero on a free transfer from Manchester City. On 1 July, Chelsea and Nike unveiled the club's new kits for the 2017–18 season, to be sold in the refurbished "megastore". Daishawn Redan, a youth striker at Ajax, became the second high-profile youth signing of the season, and Ethan Ampadu of Exeter City also linked up with the academy upon the opening of the summer transfer window. July Īfter reaching an agreement with Rangers, youth player Billy Gilmour joined Chelsea on 1 July for a reported £500,000 transfer fee.

Aké spent the first half of the 2016–17 season on loan with Bournemouth before being recalled prematurely to Chelsea in January. On 30 June, academy product and Netherlands international defender Nathan Aké signed for AFC Bournemouth, who broke their transfer record after paying a reported £20 million transfer fee. Traoré subsequently signed a five-year contract with Lyon, with reports suggesting buy-back and sell-on clauses had been included in the contract.
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On 26 June, Burkina Faso international Bertrand Traoré joined French club Lyon for an initial £8.8 million transfer fee, plus potential add-ons. While on international duty with Belgium, Eden Hazard fractured his right ankle and was consequently ruled out of action for three months, meaning he will likely miss the start of the 2017–18 season. On, Asmir Begović signed for Premier League club AFC Bournemouth on a long-term contract after Bournemouth purchased the player for an undisclosed transfer fee rumoured to be close to £10 million. On 24 May, newly promoted Premier League club Newcastle United activated the option-to-purchase clause in Christian Atsu's loan contract from the 2016–17 season, purchasing the player for a reported £6.2 million. He subsequently signed a contract with the Serie A champions until 2020. On, it was announced Juan Cuadrado would join Juventus on a permanent deal for a preset transfer fee of £17.3 million after a clause in his loan contract became triggered. Supplier: Nike / Sponsor: Yokohama Tyres (chest), Alliance Tyres (sleeve)
