Atletico Paranaense midfielder Nathan has confirmed his move to Chelsea after signing a contract with the club  Getty

Chelsea have completed their first summer signing of the season after Brazilian starlet Nathan took to social photo sharing site Instagram to confirm his move after signing a contract and completing his medical with the club.

The Atletico Paranaense midfielder has been on the verge of completing a move for almost a month, with the Blues said to have agreed a fee in the region of £4.5m ($7m) to sign the youngster.

The newly crowned Premier League champions are yet to announce the deal, but Nathan expressed his delight as completing his switch to Stamford Bridge. He thanked his family, friends and his former club for helping achieve his dream.

"A dream is coming true! First of all I want to thank God for always lighting my way, my dad who always believed in my talent and was a real warrior while helping me to reach my goals, my family and friends who always supported me," Nathan wrote on his Instagram post, as quoted by Goal.

"And I am also thankful to Club Atletico Paranaense, which was part of this journey and where I played for six years of my career. Thank you Chelsea for trusting in me, I will do my best to support my team on reaching new achievements. WE ARE ALL BLUE," the Brazilian added.

Meanwhile, he is not the only Brazilian on Chelsea's radar, as reports suggest they are close to finalising a deal for Fluminese forward Robert Kenedy.

According to the Telegraph, Jose Mourinho's team are tracking the highly-rated forward, who is valued at £5m by the Brazilian club. Manchester United and Inter Milan are said to have shown interest in signing the young star, but Chelsea are said to be confident about landing him ahead of their rivals.

The report claims that Kenedy first caught the eye of the European scouts at the U17 south American championships in 2013, when he finished as the top scorer for Brazil with six goals.

The west London club will clearly have an advantage over other interested clubs, as the 19-year-old forward has already indicated in 2013, that he is keen on playing in Europe with Chelsea being his favoured team, due to the huge Brazilian contingent present at the club.

"Of course I am happy to play for Fluminense but it is my ambition to one day play in Europe. I like Chelsea because of players like Oscar and Ramires. I like the whole team," Kenedy said, as quoted by the Telegraph.

However, both the players are being recruited for the future and will have to be loaned out as they will not be handed work-permits to play in England.