Fletcher has become a key player for United in recent seasons and looks certain to start the Champions League clash tonight.
“I love the big games,” Fletcher told the Daily Mail.
“I get excited before them and not a bit nervous,” he added. “I dreamed about playing in these games as a kid so I’m determined to make the most of them, determined to test myself to my full ability.
“I don’t want to sound big-headed, but I’ve never come up against anyone who has torn me to shreds. The only time that has happened has been in training against Roy Keane and Paul Scholes.
“I do enjoy the big games, I really do.”
Fletcher was suspended in the Champions League final clash with Barcelona last season.
“It was hard for me last season but we want to win this competition for everyone,” he added.
“The most disappointing thing about last season was that we didn’t do ourselves justice in that final.”