Morgan will make his first worldwide begin since main Wales within the World Cup quarter-final defeat in opposition to Argentina in October 2023 in Marseille.
The flanker missed the 2024 Six Nations due to a knee downside and the summer time tour because of a hamstring damage.
Morgan, 24, was named on the bench for the defeat in opposition to Fiji however made an impression when he got here on within the second half.
Cardiff again row Botham was additionally outstanding within the latter levels final weekend and is available in for Plumtree, who drops out of the 23-man squad, whereas Reffell is on the bench.
Cardiff wing Grady was dominated out of the autumn sequence after struggling a first-half damage within the defeat in opposition to Fiji, with Rogers most popular to Rio Dyer and Josh Hathaway.
Gatland has opted for the extra conventional stability of 5 forwards and three backs on his bench this time after the tactic of six forwards and two backs backfired in opposition to Fiji.
After shedding Grady to damage, Gatland admitted afterwards the incorrect substitute had been despatched on with Scarlets fly-half Sam Costelow enjoying out of place somewhat than Cardiff scrum-half Bevan, who had been allotted to cowl the wing.
Scarlets centre Eddie James is called as a substitute in opposition to Australia.
