Morgan missed last Saturday's 3-2 home win over Birmingham and the midweek Capital One Cup victory at Carlisle after suffering a back spasm but the centre-half has now resumed training.
Schmeichel was given the night off at Brunton Park to rest a mild ankle knock but will be fit to face the Addicks as Nigel Pearson's men look to head into the international break still unbeaten.
Defender Sean St. Ledger remains the only other injury absentee but his comeback from a knee problem is progressing well and he has also resumed light training.
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