Juventus manager Massimiliano Allegri has said that Juventus forward Cristiano Ronaldo is facing difficulty to prove his fitness ahead of Juventus' Champions League clash with Ajax.

"Cristiano is working to get back, we hope to have him ready for Ajax, but it will be difficult," Goal.com quoted Allegri, as saying.

"Today's exam is much better, the leg is much better, then there is a clinical examination and the player's symptoms. There are still nine days to go. So we still have time to evaluate things together," he said.

"He is doing things he can do right now, it is normal that you have to be careful in everything and evaluate pros and cons," he added.

Ronaldo is struggling with a thigh injury which he picked up while he was playing for Portugal against Serbia which ended up on a 1-1 tie.

Juventus will compete with Ajax in the Champions League quarter-finals on April 11.

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