It looks like Armstrong is giving Mike Yeo a chance to start with a fresh group of assistants. At least we will see some fresh faces behind the bench next season.
UPDATE
As soon as I posted the article, hockey writers started chiming in on potential replacements
On STL coaching, its believed Craig Berube and Darryl Sydor are good bets to move up from AHL Chicago.
— Elliotte Friedman (@FriedgeHNIC) May 16, 2017
JR also mentions Yeo had worked with both Therrien and Bylsma in the past.