Morison sat out the midweek win over Burnley due to an ongoing groin problem, but hopes to be back in the squad, while midfielder Brown has completed a two-game ban after reaching 10 yellow cards.
Skipper Lee Peltier remains doubtful due to the sprained ankle that has kept him out of manager Brian McDermott's first two games in charge, so Tom Lees is likely to continue alongside Jason Pearce in central defence.
Striker Ross McCormack sustained an ankle injury in the closing stages against Burnley, but is expected to be fit as Leeds chase a third straight win under McDermott.
Midfielder David Norris will miss the last three games of the season due to a knee injury, but McDermott has no other new injury or suspension problems as Leeds chase their first away win in the league since December.
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