Nobody really can know what is or isn't a "rush" at this point. His development might progress much faster than expected, or he might progress much slower that expected.
If he's ready to be in the rotation at the start of 2015, then I'd be happy with that. I've seen projections of 2014 - I assume they mean toward the middle - end of 2014.
Maybe a September call up end of 2014, and in the rotation in 2015. We shall see....
Or who knows, maybe Sandy if flips him + another prospect to get some outfielders..????
He seems to be a good one though. Plus pitches.