"There are a lot of players away with those that have been at the Euros so there are not many regular first-team players training but it doesn't really matter to me," Tunnicliffe explained to ManUtd.com.
"It's my chance to improve and prove I am capable of being there.
"I don't know about the tour. It's not far off but I don't think the squad has been announced yet. Hopefully, I will be going. It will be great experience as I could get more game-time and an opportunity to impress."