Leven starts a two-match suspension after picking up his 10th booking of the season during the 4-1 win at Rochdale on Saturday.
Leven`s absence means on-loan Norwich man Stephen Hughes could be handed his first start alongside Stephen Gleeson in the middle.
Central defender Sean O'Hanlon serves the last game of his two-match ban so Mathias Doumbe will again partner Gary MacKenzie.
Manager Karl Robinson saw striker Sam Baldock score his first goal since October at the weekend and the youngster has now finally returned to full fitness after a hamstring problem.
On-loan QPR forward Angelo Balanta is back in training after a lengthy spell out with an ankle injury but needs match fitness and will not be involved.