That's not going to happen.
But in RG he could face nole in the SF or QF?
Yes, in the QF he can meet anyone except those in his seeding range, likely to be Berdych, Tsonga and Del Potro (always hoping everyone will be fit to play) as he is very likely to stay in the #5-8 range.
Don't expect a Djokovic-Nadal QF, though. For years we had Federer - Djokovic SFs all the time and Nadal - Djokovic SFs almost never, Nadal drawing Murray instead. If Nadal didn't draw Djokovic then, on a 50% chance, why should he now on a 25% chance?