Assistant boss Neil Baker: "It's a thigh strain which he's had for a little while but it hasn't been something that would stop him playing.
"But he has aggravated it so I would imagine that will be a couple of weeks without David."
The news comes as a major blow for Dario Gradi’s side with tough games against West Brom, West Ham, Cardiff and Stoke coming up in the next two weeks.
Wright’s replacement against the fancied Latics, Anthony Tonkin, will probably be recalled to left back for the game against the Baggies.