Chelsea will  announce the £4.5million signing of Brazilian wonderkid Nathan on Wednesday in a move that will come as a significant blow to Manchester City. The dazzling attacking midfielder, who turned 19 last month, has been in London for talks with the Blues this week and passed a medical on Tuesday. Nathan is seen as the next big thing in South American football and touches down in the capital with an ever-growing reputation. Chelsea will announce the £4.5million signing of Brazilian wonderkid Nathan on Wednesday . Chelsea manager Jose Mourinho has beaten Man City boss Manuel Pellegrini to the signing of the Brazilian . Premier League champions City had hoped to tie up a deal after first spotting the player at the World Under 17 Championships two years ago. He has since broken into the Atletico Paranaense team but a serious contract dispute with the Brazilian side meant Chelsea were able to swoop. Nathan joins the already strong Brazilian contingent at Chelsea, moving alongside Willian, Ramires, Filipe Luis and Oscar. The staggering potential of Nathan, who can also play as a secondary striker, means he could feature in Jose Mourinho’s first team next season. Nathan will join fellow Brazilians Willian, Ramires, Filipe Luis and Oscar (pictured) at Stamford Bridge .
Both Chelsea and Manchester City were keen on signing Nathan .
The attacking midfielder has been in contract dispute with his current club .
Nathan has been in London for talks and passed a medical on Tuesday .