Madrid came from behind to beat the bottom-placed club at the Bernabeu in a game which hinged on a controversial penalty award that resulted in Juanfran being sent-off late on.

The winger appeared to have won a spot-kick for Jose Antonio Camacho's men when he went down under a challenge from Pepe with the game delicately poised at 2-1 but, after some confusion, he was issued with his second yellow card for diving by referee Perez Burrull.

Club president Patxi Izco stormed out of the directors' box in rage following the decision and was so outraged by what he had seen he went to speak to the referee face-to-face.

He told Spanish newspaper Marca: "You will not be able to sleep tonight. I told Perez Burrull that his conscience would not let him sleep peacefully.

"I've been in football for eight years and during that time I've shown myself to have patience and good manners and I've made it clear that I know how to behave, but there are times when you burst a blood vessel, it's the straw that breaks the camel's back and so for this reason I wanted to go down to the dressing room and tell that man, that referee, what he needed to be told.

"I saw two penalties, two penalties where there was no room whatsoever for error. During the game a former international referee, a friend of mine, called me and assured me that Perez Burrull is a criminal. He used those words. This person called me to tell me this and it appears he was right."

Coach Camacho believed Perez Burrull "didn't dare" give a penalty which he was originally set to award.

"Everyone saw it and so did he (the ref), because he signalled a penalty. But then he didn't dare give the penalty he had blown for," he said.

"I think that referees make mistakes just like everybody else. But this really hurts us, and on top of it all, he (Perez Burrull) is shouldn't have such a cocky attitude.

"He can't come to the line and tell the the fourth official that I had to sit down. Both coaches were out there, but he only directed himself at me. I think he needs to be careful there, because the game was a hot one.

"If I had protested that would have provoked another expulsion, which is why I preferred to do nothing."

The punished player himself, Juanfran, added: "I'm stunned. It's the first time something like this has happened to me. I feel a mixture of shock and rage.

"I can tell you hand on heart that I did not dive for either of the two penalties. The linesman saw them clearly but didn't dare do anything.

"On both occasions there was contact and I couldn't continue. I'm one of those players who'll always continue if they can, but I honestly couldn't, and that's why I fell to the ground.

"I feel bad because the fair thing to do would have been to give the penalty. I've come back home after four years to do things well and it hurts me a lot that the referee has made this mistake."

Members of the Madrid camp also admitted refereeing decisions had affected the outcome of the game.

Sporting director Predrag Mijatovic told realmadrid.es: "I think the refereeing has harmed Osasuna, sometimes this happens to us, but we were worthy winners."

Reports in Spain now claim Perez Burrull has been dropped from his next fixture, the Copa del Rey game between Espanyol and Barcelona later this week.

Should the reports be confirmed he becomes the second referee this season to be banned after awarding controversial decisions in favour of Real Madrid.

Osasuna meanwhile have announced they will appeal against the sending off.