It will be interesting to see how they approach it. Unfortunately, I think they'll continue in the "win now" mode to save Gibby and AA's job (which in AA's case is ludicrous) even though their chances of success are cut in half like Stroman's ACL.
They should be leaving Norris in AAA to avoid starting his arbitration clock. Start with Sanchez (give him a shot to start - just to say you did) and Estrada - give Sanchez's bullpen spot to one of the 349 arms AA brought in (West preferably) and then bring up Norris later on once it's obvious Sanchez isn't (and may never be) ready to be a ML starter.
I'd prefer to just deal Sanchez now while his value is high, however, I suspect instead they'll give him a shot to start (he's been AA's golden child for 3-4 years now). I'd rather see that happen and his trade value plummet (with the outside chance he does succeed) than start the arbitration clock on Norris early.
As Gorlak said - they are going to need more than 2 starters, as neither of the young guys are ready for 200 innings.