If it is Narduzzi (big if, still), I would htink (hope) it is announced as soon as the deal is done, and if they agree he will remain to coach MSU in the Rose Bowl,, he at least can contact committed recruits and work to assemble his staff while continuing to coach MSU inthe Rose Bowl.
This is why I'm a bit skeptical about Narduzzi if the UConn is planning on announcing a new coach in the next week or so.
Generally coaches who are hired during bowl season fall into 4 types.
1) Coaches who aren't coaching a bowl game to begin with - no conflict here
2) Coaches who are making a jump to their "dream" coaching job
3) Coaches who are established and don't care about potential political fallout
4) Coaches who are/about to be forced out
I don't think Narduzzi falls into any of these buckets so I would be surprised if he's the one who's announced.
Mind you, there's little benefit a coach to be announced now vs early Jan - we're reaching recruiting dead period so it's not like he can use the rest of the month to recruit anyway. The main benefit would be time to get his "team" in place and he can do that w/o a formal announcement being made.