The Scottish midfielder, who has endured long spells on the sidelines with injury, is excited about the prospect of facing the likes of Roma, Inter and Real Madrid this summer
The Red Devils are due to visit the States later in July, with a minimum of four games against strong opposition. Following a clash with LA Galaxy, they will take part in the International Champions Cup, in which they will come up against Roma, Inter and Real Madrid.
Should they reach the final, Louis van Gaal's side will take on Manchester City, Liverpool, AC Milan or Olympiakos and Fletcher is looking forward to a tough build-up ahead of the 2014-15 season.
"You want to challenge yourself against the best and, although it's pre-season, if you're playing against someone like Real Madrid you are going to be against top-quality opposition," the Scot told the club's official website.
"It's like in training here: when we play in two teams it becomes quite competitive and you'll see the same in these tour matches.
"Once you get on that pitch it's competitive and you always want to win every game and every tournament you're involved in.
"I'm sure the sports science lads will be saying that it's all about minutes and not getting injured but sometimes these games can get feisty.
"It's what you want as you want to make an impression and impress the fans and the manager because you want to be in the team for the start of the season."