Worked for Froch against Bute. I don't think he will retire if he loses to Froch, though, unless he gets stopped. There is still good money to be made against Bute, Pascal, Cleverly, ... Kessler may be rich, but would he turn down $1m? Don't think so.
Well he is 34,and has been world champ and fought the best. If he loses, there isnt much more for him to do.