CHELSEA have completed the signing of record-breaking Sporting Lisbon midfielder Dario Essugo.The Blues are paying £18.5million with no add-ons, for their first signing of the summer transfer window – which opened on Sunday.Chelsea have signed 20-year-old star Dário Essugo from Sporting LisbonChelsea FC is pleased to confirm the signing of Portuguese midfielder Dario Essugo.Welcome to Chelsea, Dario! — Chelsea FC (@ChelseaFC) June 2, 2025Essugo has signed an eight-year deal until the summer of 2033 – in keeping with Chelsea‘s long contractual transfer policy.The 20-year-old spent last season on loan in LaLiga with Las Palmas, scoring once in 27 games, and is a Portugal Under-21 international.Essugo began his career in Sporting’s academy and became the youngest-ever player to feature for the club.He made his senior debut aged 16 years and six days against Vitoria de Guimaraes in March 2021.Later that year, he broke Luis Figo’s record as the youngest starter for Sporting, aged 16 years, 11 months and 17 days.Essugo then gained experience with Sporting B before featuring 23 times for the club’s first team, under then boss Ruben Amorim.He made two appearances for Sporting at the start of 2024/25 season before joining Las Palmas on loan.Essugo spent the second half of the 2023/24 campaign on loan at Primeira Liga side Chaves, for whom he made 14 appearances.CASINO SPECIAL – BEST CASINO BONUSES FROM £10 DEPOSITSEssugo will have to battle for a place in a heavily congested Chelsea midfield.While Kieran Dewsbury-Hall has been linked with an exit, Essugo still faces competition with Enzo Fernandez, Romeo Lavia and Moises Caicedo. Chelsea are also planning to stand by the club’s £25million obligation to buy Man Utd flop Jadon Sancho this summer.THIS IS A DEVELOPING STORY..The Sun is your go to destination for the best football, boxing and MMA news, real-life stories, jaw-dropping pictures and must-see video.Like us on Facebook at https://www.facebook.com/TheSunFootball and follow us from our main Twitter account at @TheSunFootball.