Why He Will Succeed: From what I've seen, Monk looks quick and powerful. If the Packers can channel and harness his ability, he should be either a starting caliber center or a high end backup with interior versatility.
Why He Would Fail: It's simple-- the technique doesn't come up to speed, as it doesn't for many picks taken this late, and he doesn't materialize as a viable player. He is also probably limited to center in terms of becoming an entrenched starter, which narrows his avenue for real success.
My Guess: Monk will be 2nd string immediately, but I honestly see no reason why he couldn't be a future starter at center if Tom doesn't end up there in the long term.
Upside Comp: Erik McCoy