He has returned to training however and believes he could return for Leinster before the end of their campaign.
"I don't know what Joe's [Schmidt] plans are (for Argentina) or anything like that," he told the Irish Independent.
"I will have to speak to him about that and see what he's thinking if I am fit. I am presuming he is going to rest some lads going over there to keep them fresh for next year.
"I'm into my second week now of hard training. I'll know where I am in two more weeks. I'll probably know then exactly when I'll be coming back.
"I've just been doing a lot of running and strength and conditioning, trying to get back into reasonable shape to give myself the best chance of getting back at some point, either at the end of this year or in the summer."