TalkSport reports that the Blues are preparing a swoop for the highly-rated midfielder.
Chelsea signed Oriol Romeu from Barcelona in the summer and the youngster impressed when he made his first league start of the season against Wolves on Saturday.
Roberto is highly regarded at Barcelona, but could be available for around £5million.
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The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.
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