Manchester United boss Jose Mourinho admits they must take seriously the FA Cup.

Mourinho says he has learned from "throwing away" FA Cup games in the past and will not make that mistake at Blackburn Rovers in the fifth round on Sunday.

In 2005, Mourinho's Chelsea went out to Newcastle in the same week as wins in the League Cup final over Liverpool and Champions League against Barcelona.

"I gambled too much, I focused too much on Barcelona and Liverpool," he said.

"It was good because we beat Barcelona and we won the final against Liverpool, but the feeling I threw it away was not good, so I don't throw it away.

"If I lose, I lose because the opponent was better or because we didn't play well, but I'm not going to throw it away."