The Lions' 17-goal top scorer has completed the three-match ban he received for his red card against Bristol City, and the enforced break also gave him time to recover from a heel injury.
Morison is likely to partner teenager John Marquis, who hit three goals in two games over the Easter weekend, with Josh McQuoid dropping to the bench.
Veteran Neil Harris sits out the last game of his three-match suspension and fellow striker Kevin Lisbie is still sidelined with an ankle injury.
Right-back Alan Dunne (eye) and midfielder Liam Trotter (hip) could return after sitting out the 2-1 win at Scunthorpe on Easter Monday with knocks.
Source: PA
Source: PA