The young Belgian impressed in United's friendly defeat to Thailand's Singha All-Stars last week.
"I am excited. Adnan [Januzaj] did well and looks a really good prospect. He has trained with us quite a bit in pre-season and shown his talent.
"Now it is just about having that experience, learning from the older players and doing what he does best. You don't want to get ahead of yourself – he is only young," Giggs told PA Sport.