There's concerns at Real Madrid that Cristiano Ronaldo is struggling to make the El Clasico against Barcelona.

Real host Barca at the Santiago Bernabeu on Saturday night.

And AS says Ronaldo has not trained with coach Zinedine Zidane's first team squad for the past two days.

Now less than three days away from the big game, there are serious doubts over whether Ronaldo will be fit for the game.

But Real sources insist the decision for him to train away from the rest of the squad is only a precaution and there's confidence he will make the big game.

Karim Benzema, after missing Tuesday's session, was back under the orders of Zidane on Wednesday.