Sir Bobby Charlton has laid the blame for Manchester United's Champions League exit at the players' door.
Sir Bobby Charlton feels United players did not give their all
United failed to even gain a place in the Uefa Cup after finishing bottom of their group.
The Old Trafford director said: "United do not have a divine right to qualify and hopefully the players will learn from the experience.
"They will look back at this season and remember what can happen if you don't give 100%."
United are in the semi-finals of the Carling Cup but find themselves nine points behind runaway Premiership leaders Chelsea.
But Charlton is adamant manager Sir Alex Ferguson will find the solutions that mean such a European demise will not be repeated.
He said: "I'm certain Sir Alex will put his thinking cap on and work out why it happened, how it happened and how we can put it right.
"I really don't know what it was. I wish I did.
"Maybe the opposition did not motivate the players, I really don't know."