Don't shoot the messenger, but according to rivals sources,
"Dorsey’s “back-up plan” is one he’s almost definitely going to have to pursue"
"view it as a ‘very unexpected bonus’ if Dorsey ends up in Ann Arbor, because it’s not likely."
This isn't looking good. The article doesn't mention any reasons why he isn't coming but it seems as though this is something he, and his coaches, have known from the beginning.
Sorry for the dong punch