Morgan missed the first four rounds of the URC after suffering a calf problem on his return from the Lions’ tour to Australia.
The flanker came off the bench in the draw against Dragons at Rodney Parade in October and then went off to Wales duty.
“The guys that have been playing while Jac has been injured have done a terrific job, but it’s always brilliant when you bring a Lion back into your environment and selection,” said Jones.
“It’s good for the competition for places and competitiveness around training. He has added a great energy to the environment, on and off the field.”
This weekend’s fixture against Benetton would be Morgan’s first game since it was confirmed that he will leave Ospreys for Gloucester along with Dewi Lake in the summer.
Jones believes the forward from Brynaman will be determined to finish with a flourish.
“He has put a lot into the Ospreys over the time he has been here, physically and emotionally,” said the head coach.
“We want the whole thing to end on a really positive note. I can’t see anything other than a fully-focused, excited Jac Morgan wanting to go out on a high, and as a team we definitely want to do that.”