Iker Casillas: Real Madrid target Sergio Aguero is one of the three or four best players in the world

The custodian has showered the young Argentine with some bold praise, but went on to say that switching to a rival club may prove difficult for the striker

Real Madrid goalkeeper Iker Casillas has issued Atletico Madrid star Sergio Aguero with some hefty praise ahead of a potential cross-town move, before adding that it will be tough for the Argentine join his side.

Speaking at a press conference, the goalkeeper lavished the Argentine with plaudits, claiming the 23-year-old is among the best players in the world at this time, which would rank him near teammate Cristiano Ronaldo, and Barcelona talisman Lionel Messi.

"Right now, Aguero is one of the three or four players who are a little bit higher in the world of football," said the Madrid skipper.

"He is very young, determined and talented. He is being followed by many great teams."

However, despite the Bernabeu being touted as the striker's most likely post-summer destination, Casillas remained cautious over the likelihood of the deal, given the clubs' fierce rivalry.

"I do not think it would be comfortable or easy [for Aguero] to make a move in the Spanish capital and go from Atletico Madrid to Real Madrid."

Even without the Spanish sides' bitter history, finding any club willing to part with the cash to pay for the the young hitman's €45 million buy-out clause remains a major factor in any potential summer switch.

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