The former Crystal Palace winger has caught the eye in preseason action.
"I'm still a bit starstruck, if I'm honest, but I'm enjoying every minute of it," he told manutd.com.
"In the changing room I'm sitting between Ryan Giggs and Danny Welbeck. I mean, I'm sitting next to these famous people who I watch all the time on TV. It's just a dream to be able to play with them.
"I sit there and think, 'Oh my God, I'm actually in the changing room with these guys'. But I'm obviously here for a reason.
"I worked hard at Palace to get the move I wanted and I just want to prove to people that I deserve to be here."