Chelsea manager Roberto Di Matteo preferred not to comment on speculation linking the club with Internacional midfielder Oscar.
The highly-rated 20-year-old is currently in London as he prepares to compete in the Olympics with Brazil. Although the Blues have already secured midfielders Eden Hazard and Marko Marin, speculation has persisted recently that they are determined to add Oscar to their ranks.
Di Matteo told the club's official website: "I can tell you that he's not a Chelsea player so it's difficult for me to talk about a player that doesn't belong to us."
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