Zaha will be hoping to impress new boss Louis van Gaal in the early hours of Thursday morning when United take on LA Galaxy in the first game of their pre-season tour of America.
"It's great to be back," Zaha told manutd.com. "There's a nice vibe, everybody's working hard and we're looking forward to the new season.
"For me, I definitely feel like this is a clean slate.
"All I'm trying to do is impress the new manager and get into his squad. All I can do is give my all. There's a new manager and I want to make sure I show him what I can do."
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