Thanks for the link to the CNA transcript. Here is the full context of the “two to three years” comment:
French journalist Anais Martin, French Radio:
In Rio, when the crowd yelled “Francesco, Francesco!” you responded “Cristo, Cristo!” Today, how do you manage this immense popularity? How do you live it?
Pope Francis:
I don’t know how to tell you. I live it thanking the Lord that his people are happy. I really do that, hoping the best for the people of God. I live it as generosity towards the people. On the inside, I try to think of my sins and my errors not to flatter myself because I know it won’t last long. Two or three years and then (makes a sound and gesture) up to the house of the of the Father. It’s not wise to believe this. I live it as the presence of the Lord in his people who uses his bishop, the shepherd of the people to do so many things. I live it more naturally than before. Before I was a bit scared. Also, it comes to mind not to make errors because you can’t do wrong for the people and all these things.
That doesn’t seem that odd a thing to say to me.

My wife’s grandmother was saying for years, “I’ll never live to see you graduate high school.” Then it was “I’ll never live to see you graduate college.” Then it was “I’ll never live to see you get married.” Then it was “I’ll never live to see you have children.” But she lived to see all of the above.

It just strikes me as something older people say. No particular significance to that. It’s not as if Pope Francis was claiming he had some vision or something.
Here is the full context of the “pope emeritus” comments:
German journalist from KNA:
What type of relationship is there between you and Benedict XVI? Is there an habitual exchange of opinions and ideas? Is there a common project after this encyclical?
Pope Francis:
We see each other. Before leaving I went to see him. He, two weeks prior, had sent me an interesting text and he asked me an opinion. We have a normal relationship because I go back to this idea and maybe a theologian doesn’t like it. But, I think that the pope emeritus is not an exception. After so many centuries, he’s the first emeritus and let’s think that if i am aged and don’t have the strength, but it was a beautiful gesture of nobility and also humility and courage. But, I think that 70 years ago also the bishops emeritus were an exception. They didn’t exist. Today, the bishops emeritus are an institution. I think that the pope emeritus is already an institution. Why? Our lives are getting longer and at a certain age there is not the capacity to govern well, because the body tires and health perhaps is good but there is the capacity to carry forward all of the problems like those in the governance of the church. I think that Pope Benedict made this gesture of popes emeritus. I repeat that maybe some theologian would say this isn’t just, but i think like this. The centuries will tell if it’s like this or not, we’ll see, but if you can to say to me, ‘but do you think that one day if you don’t feel like it, will you go on?’ But, I would do the same. I would do the same. I will pray, but I would do the same. He opened a door that is institutional not exceptional. And our relationship is one of brothers, truly, but I’ve said that it’s like having a grandfather at home for the wisdom. He has a wisdom with his nuances and it does me well to hear. He encourages me a lot. This is the relationship we have.
In Pope Francis’ mind, Pope Benedict’s act
already institutionalized the idea of a “pope emeritus”. He seems to acknowledge that some theologians may disagree with that and that ultimately only history will really know. It’s not something I’m particularly concerned with. As Francis said, not so long ago, the idea of bishops retiring was also unknown. But now it is the norm. It wouldn’t seem that odd to me for the same to occur with the papal office.