Vallejo in the 1-0 shock loss.
He said: "First, I apologize to the fans. We come away feeling that Rayo have played out from the back quite easily and we haven't done a lot of damage up the other end.
"You don't need motivation with this shirt, you have to go out and do things well. Nor should we have to be playing for the Champions League or LaLiga to be motivated. The passion of football is why we are players. We have to enjoy the three remaining games because it'll be better that way. We can't think about wins and the defeats. We have to rest and stay calm."