Chelsea defender David Luiz is reportedly undergoing a medical with Paris Saint-Germain ahead of a proposed big-money move to Parc des Princes this summer.

The French champions are believed to be in advanced talks with Chelsea regarding a £50m transfer, which would make Luiz the world's most expensive defender.

According to Sky Sports News, the move has progressed even further after PSG officials flew out to Brazil to carry out a medical with the 27-year-old, who joined Chelsea from Benfica in 2011.

Luiz is currently in his homeland with the Brazilian national team ahead of next month's World Cup.