I'd go with Kiko Casilla over Keylor Navas at Athletic Club

Keylor Navas' form is a worry to us all. Real Madrid's goalkeeper is in the midst of an acute crisis of confidence. I feel Zinedine Zidane needs to make a decision - fast.

I was a staunch supporter of keeping Keylor at the Bernabéu instead of signing David de Gea from Manchester United. I have no doubts about the Costa Rican's ability.

Last season, the 30-year-old was a brick wall in goal - conceding just 31 in 45 games - and had a big hand in Los Blancos lifting their 11th European Cup.

However, it would be folly to ignore the painful truth that, this term, the custodian hasn't hit the same miraculous heights since going under the knife in the summer.

There's a murmur of unease in the stands every time he faces a shot; the fans have started to lose faith in him, and that's a deadly situation for any keeper.

Keylor Navas reacts after his error saw Real Betis take the lead at the Bernabéu on Sunday.

I don't doubt Navas; but why not try Casilla if he's in better nick?

The easy is option is to give him a vote of confidence, get behind him. It's to be expected that his team-mates should do so; such togetherness in a squad is a must.

But, looking at it from a cold, purely footballing point of view, why not give his understudy, Kiko Casilla, a go at Athletic Club on Saturday afternoon?

Casilla has done very well in the run-outs that he's had this season; he hasn't had many, but he's had enough to show that he performs when called upon.

He avoided disaster at Sevilla in the Copa del Rey return, pulled off three fine saves to keep Real alive in Vigo, and stopped a penalty against Osasuna in LaLiga.

Casilla came through the youth ranks and is Real Madrid through and through. He knows his role. He won't complain in public about being on the bench.

But surely meritocracy is all about fielding the man who's in the best shape. And if that man is Casilla, then why not give him a shot at San Mamés this weekend?