The American teenager, who has represented his country at youth level, is highly regarded.
The battle between the La Liga giants is now being fought out according to the Daily Mail for his signature.
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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.