I know hiring agents during the pre-draft process isn't an issue now, but apparently there's reason to think that Brazdeikis and Poole will more likely than not both go pro. It makes no sense to me, since they'd far more likely be first-rounders next year. If nothing else, hopefully their decisions will be finalized sooner than later so Michigan knows what to do.
Fortunately, Michigan has had success with late recruits (LeVert, Abdur-Rahkman, Wagner, and to a lesser extent Horford, Novak, Albrecht, and Dawkins.... Bielfeldt is the main exception), though as you can see, it's been awhile since they had to sign anyone this late, as everyone on this year's roster signed early.
They should also be more aggressive and should get more interest from graduate transfers. The initial list of players that they were reportedly looking at weren't that impressive, but perhaps now someone like Pat Andree of Lehigh will have some more mutual interest, since various articles have him just looking at borderline top 25 teams at best, so far, despite his good offensive stats.