Real Madrid ace Ronaldo struggling to make Athletic Bilbao clash

Cristiano Ronaldo is battling to make Real Madrid's clash with Athletic Bilbao today.

The world player of the year suffered a painful kick to the back of the leg in Wednesday's Champions League victory over Ludogorets in Sofia.

Ronaldo, who scored and missed a penalty against the Bulgarian side, did not play a part in full training on Friday but did run alone as he looked to prove his fitness.

gareth Bale also missed coach Carlo Ancelotti's latest session for an unspecified reason but did train indoors.

A statement on realmadrid.com read: "Ancelotti placed an emphasis on working with the ball in a training session that saw Cristiano Ronaldo do running alone on the pitch at Ciudad Real Madrid.

"Bale and (Fabio) Coentrao did work indoors at Madrid's training facilities, while Jese and (Sami) Khedira continue with their recovery processes."