Gazzetta dello Sport claim that the Spanish giants have registered an interest in the Montenegrin forward.
Arsenal, Juventus and Chelsea are amongst the clubs thought to be after the 23 year old.
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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.
Five English clubs will compete in the last sixteen of the Champions League for the first time ever as Liverpool, Manchester United, Manchester City, Chelsea and Tottenham face some difficult away matches.