I actually would play him instead of Kagawa. He may be just after scoring a hattrick, but let's face it, Norwich aren't that great, and Welbeck seems to have a habit of performing in the big games, the first leg being a good example.
Pick 2 out of Kagawa, Welbeck and Giggs to fill the spots up for grab. Jones will start. Don't think Kagawa would have started before Saturday but he made a strong case for starting. Not playing Welbeck would be harsh but I'd prefer Giggs for the home leg out left.
Rafael Rio Evans Evra
Rooney Kagawa Giggs
Welbeck could fit in on the right if Kagawa doesn't start and move Rooney inside.