Former Browns offensive coordinator doesn't really float my boat. He's hot right now, but nobody really talks about who the good OCs would be until you need one.
What he has going for him is:
Superbowl Ring
* Experience with Bradford (and maybe a recommendation)
* Nick Foles didn't collapse in the postseason
* Philly wants to keep him
What he has on the con column is:
* Former Browns offensive coordinator (fired)
* OC for Johnny Manziel (who crashed harder than any player since Ryan Leaf)
* If he wins a superbowl in MN next year, he's going to be the hottest head coach candidate in a long time.
The Browns are toxic enough and Manziel had enough character problems that you can almost ignore them, but still...
The Vikings really need to get this nailed down as fast as possible. March 1 is around the corner. The bright side is that usually when you lose an coordinator, the HC's position becomes (or already is) a question mark. Zimmer has done well enough for that to not be the case.