According to Ian Rapoport of NFL.com, the Colts have narrowed their list to two head coaching candidates:
The most interesting part of this piece from Rapoport: the Colts could make a decision as early as Monday.
Obviously, they won't be able to officially announce McDaniels until the Patriots are eliminated (or win the whole thing), but we could know by early next week if they're just waiting around for New England's offensive coordinator.
As for Vrabel, he's reportedly still alive for the Detroit job. McDaniels isn't even being mentioned with the other vacancies right now.