Chelsea have confirmed the signing of 18-year-old Brazilian full-back Denner from Corinthians.Denner, who starred for Corinthians‘ Under-20 side, has signed an eight-year deal with the Blues.Denner will link up with Chelsea’s age-group squads at their Cobham training baseGettyThe teenager will link up with Cobham Next Gen (CNG), Chelsea‘s newly rebranded Under-19 and Under-21 squads.Denner’s rapid riseDenner joined the youth set-up of hometown club Corinthians at the age of 13.By 16, he was representing them at U-20 level, helping that team finish as runners-up in the Sao Paulo Youth Cup.He scored the opening goal in the final as Corinthians were beaten by Sao Paulo.Chelsea reportedly first agreed a deal for Denner back in 2025 with a view to signing him this year.He’s one of three academy signings the Blues have made this summer, following midfielder Harrison Bettoni from Wigan and defender Alfie Osborne from Hearts.An attack-minded full-back whose naturally position is on the left, Denner has played for Brazil up to Under-17 level.He was part of the squad that won the 2025 South American Under-17 Championship.According to Brazilian media, Denner is a cousin of Arsenal star Gabriel.And if he follows anything like the career trajectory of the Premier League title-winning Gunners centre-back, Chelsea have a very special talent indeed on their hands.Gabriel may come up against a family member in the next few yearsGettyChelsea’s lucrative windowThis summer’s transfer window was another hugely busy one for Chelsea.As well as spending over £300m to bring in players such as Moran Rogers and Maxence Lacroix, the Blues made around £400m in player sales.A substantial chunk of their total income came from the sale of Enzo Fernandez alone.The midfielder joined Manchester City on deadline day for £125m.That fee equalled the record in British football paid by Liverpool to sign Alexander Isak from Newcastle last year.Tosin Adarabioyo and Marc Guiu also made deadline-day moves away from Stamford Bridge, heading to Tottenham and RB Leipzig respectively.