According to A-GM Bruce Garrioch, the list of potential coaches is Mark Crawford, Troy Mann, Jacques Martin, Sheldon Keefe, Mike Yeo (who apparently was a top 3 runner up when Boucher was hired), and Dominque Ducharme. He also says if Paul Maurice is fired it would make sense for the Sens to talk to them.
I'd eliminate Mann from that list (politics, courtesy interview) and Maurice. That leaves five candidates. I don't think Crawford is a serious candidate unless we cannot get anybody else. There's way too much risk keeping long term a coach with his supposed temperament on a team filled with young millennials. Millennials don't respond to that screaming and shouting you suck at hockey go back to the ECHL and bag groceries in Sweden kind of stuff and our team is full of them.
Are guys like Keefe and Ducharme realistic targets? Or would they wait for a better situation to get what could be their first and only shots at being NHL head coaches? There's been rumblings that Babcock and Dubas don't see eye to eye, so I wonder if Keefe is his guy, and if we could see him taken off the market via Babcock being fired if Toronto are eliminated in round one for the third season in a row.