Arsenal have signed 17-year-old defender Marcell Washington following the expiry of his contract at Chelsea. The highly rated left-back was previously on trial with the Gunners for more than two months and made seven appearances in Premier League 2 during that period.

Arsenal completed the signing of Kepa Arrizabalaga as a free agent after the goalkeeper’s contract at Chelsea expired.

Arsenal have completed the £5m signing of goalkeeper Kepa Arrizabalaga from Chelsea. Spain international Kepa joins the Gunners on a three-year deal after spending last term on loan at Bournemouth, where he made 35 appearances in all competitions.