English club Chelsea officially announced on Tuesday that young Brazilian Estevao has joined the team.Estevao joined Chelsea last summer from Brazilian club Palmeiras for around £29m, with potential incentives.Estevao spent last season on loan at Palmeiras before joining Chelsea on Tuesday.The 18-year-old striker, nicknamed «Messinho», participated with Palmeiras against Chelsea in the quarter-finals of the Club World Cup, a tournament that Chelsea eventually won.Estevao told Chelsea's official website: «I am very happy, it is a great honor to represent one of the biggest clubs in the world, I hope I can help the team in the best way possible».