The 22-year-old penned a one-month loan deal from Lancashire neighbours Blackburn Rovers on Wednesday, and the versatile left-sided player may make his first appearance in Saturday's encounter at Highbury.
Morris' arrival provides a timely boost for Graham Alexander's men, who have fallen five points off the pace in the race for a top-three berth following a run on just one win in six League Two encounters.
Fleetwood's latest disappointment came in a comprehensive 4-0 defeat at home to play-off hopefuls Plymouth Argyle on Tuesday.
Alexander described that loss as his "worst feeling" of the season and he will be keen for his players to respond in style against Wimbledon.
Neal Ardley's charges hit the road buoyed by a 2-1 victory at Newport County, a win that ended a four-match losing streak in the league.
Wilcox's men remain unbeaten in the league since November and could temporarily overhaul Chesterfield at the top of the table with victory at Newport.
Paul Cook's Chesterfield side currently sit at the summit, but do not play until Monday when Portsmouth visit the Proact Stadium.
