If offered a HC job, which if one of these East teams like Montreal and Ottawa never get out of the hole, he probably will. Somehow, I don't know that he'd settle for an OC job with Higgins. Don't know what their history is together, but guessing he would want all the marbles as a HC.
Don't think they've ever worked together. It really depends how badly he wants to get into coaching again. Chances are if he wants to get back to a head coach again he will have to go back to being a coordinator first. His stint in Winnipeg, regardless of the situation he was put in, was too much of a mixed bag.
Also, I'm not sure Montreal is the right situation to "show" what he can do, especially if it is an interim mid season type of deal.