Ten Hag has to solve a selection problem at left-back, with Shaw not fit because of a calf injury and Tyrell Malacia ruled out for another two months as he continues to recover from knee surgery.
Mazraoui could be one answer, while Diogo Dalot and Lisandro Martinez filled in during last Saturday’s Community Shield.
Shaw has not featured for United since February and has yet to be involved for the club this summer, even though he was eventually fit enough to play for England at Euro 2024.
Ten Hag is confident Shaw will be fit soon.
“He will return in the short term,” Ten Hag said. “It doesn’t take long.
“Luke is a very important player for our team so we want to get him back as soon as possible but we can’t force this process.”