"The crowd was superb and you can't ask for more than this. At 2-0 down they knew we were out of the Champions League, but they were still singing and making us feel their support," said the Spanish playmaker.
"It's been a disappointing night for Rafa but I know he's really focused and committed to the club.
"He realises how passionate this crowd is and how much they adore him. It would be impossible for him to find another crowd like this.
"Our crowd is so special because they react as well when we're feeling low as when we've had success.
"I'm not worried about the situation with Rafa and the rumours. I know how he feels about the club."