Garry Ringrose set for return after five months out
Garry Ringrose's return has handed Leinster a major boost ahead of the province's crucial back-to-back Champions Cup clashes against Exeter next month, but Joey Carbery isn't expected back until the new year.
Having taken a limited part in training last week, Ringrose returned fully yesterday and Leinster are hopeful that he may feature against the Dragons on Friday night.
Ringrose hasn't played since Ireland's summer tour, after which he required shoulder surgery that has kept him out for the last five months.
"He was doing some on-field sessions last week so he'll be back," Stuart Lancaster confirmed. "He looked good last week. He hasn't done any real contact in training just yet so that will be today (Monday) and Wednesday.
"Realistically, if he doesn't play this week, he will definitely play next week.
"The key thing for us with the two PRO14 games, and we've got Exeter coming around the corner, we're optimistic. He's in a good place. He's made a good recovery and he's certainly looking sharp on the training field."
Carbery, on the other hand, is understood to have undergone surgery on the fractured wrist that he suffered in Ireland's win over Fiji and Lancaster does not expect the 22-year-old to return until 2018.
"He will be back, hopefully in the New Year," he added. "It is such a shame he has picked up this injury because there are windows around the corner. There is no way that Johnny (Sexton) would have played all those (games). He would have played at 10. Unfortunately, the injury means that he'll miss that window."
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Leinster could also welcome back Isa Nacewa (ankle), Dan Leavy, Fergus McFadden (both hamstring) and Ian Nagle (pec) but James Lowe is not expected to make his debut.
Meanwhile, John Ryan has returned to the Ireland squad ahead of Saturday's meeting with Argentina after recovering from a calf problem. Argentina, meanwhile, are sweating on the fitness of out-half Juan Martin Hernandez who picked up a knee injury in last weekend's win over Italy. A decision on his fitness will be taken on Thursday.