He's been averaging 18-20 miles a day for 8 weeks now. He's done workouts like 10 x 1 mile with short rests, and 2 hour long runs with tempo intervals(he's posted on facebook about these 2 workouts). He has a big base. Ryan is a hero to me, and I'm excited to see that he's healthy and stringing some training together. He found out what was getting him injured, and he addressed it. If he's careful with the speed, he should make it healthy to New York.
You have to remember, that at the elite level, these guys have many years of hard training under their belt. Due to this, its possible to run a lot faster on a random day than their training may indicate because they have 10s of thousands of miles on their legs already. If he makes it to the line healthy, anything is possible. I would say anything sub 2:10 in New York would be solid progress after the injuries, and if he runs under 2:08 I'd consider it a success.
Ryan not's going to go out and run like he did in Boston 2011. Best case scenario, 2:06 on an absolutely perfect day if God is running inside of him. (he says on good days it feels like God is running with him, but when he ran 59:43 in the half it felt like God was literally running inside of him; if he has a day like that, he runs 2:06)