Rio de Janeiro, July 18 (IANS) Chelsea is this week expected to confirm the signing of Brazilian starlet Oscar after the midfielder underwent a medical with the European champions.

The 20-year-old's club Internacional is understood to have agreed to a 25 million pound transfer fee after rejecting an initial 20-million-pound bid, reports Xinhua.

Brazil coach Mano Menezes gave Oscar permission to have the examination just hours after arriving in London with the team's Olympic squad.

Oscar has made six international appearances for Brazil and was one of the team's standout performers during a recent series of friendlies in Germany and the US.

He has been given the No.10 shirt for the Olympic tournament by Menezes, who has earmarked Oscar for the team's playmaker role.

Renowned for his slick passing, vision and speed, Oscar scored a hat-trick in Brazil's 3-2 defeat of Portugal in the final of last year's FIFA Under-20 World Cup in Colombia.

Chelsea fans will have the chance to see their new signing in Brazil's Olympic warm-up match against Britain in Middlesbrough Friday.