"It was disappointing to miss out on the Carling Cup final. I'm not going to tell a lie and say I was happy because I didn't feel part of the squad," He told the Daily Record.
"But I have experienced playing in two FA Cup finals ahead of people like Ryan Giggs, Nicky Butt and Phil Neville.
"The manager picks the team on form at Manchester United and the players on form will play - the manager does speak to you and he let me know that I was a big part of the club.
"Ruud van Nistelrooy has been dropped so has Cristiano Ronaldo. That's life at United and you should be up for the challenge.
"I feel as if sometimes the manager has tested me. Missing out on the final has made me even more determined to prove him wrong."