Is it possible to change the submmiter from myself to another user?

I uploaded some art but I'd really like it to be listed under my teammate's name, not mine, as he actaully drew it.

Yea, I know I could delete it and have him re-upload it but

(a) we'd lose the comments/kudos etc and

(b) he's not really that technical and I'd prefer not to have to make him do work.