Letting Tanev walk coincided with the worst season of Hughes' career, and a noticeable fall off for Pettersson. Couldn't just be a coincidence when both of them directly went to management pushing to have Toffoli and Tanev re-signed.
Neither one of them played like they gave one ounce of a shit. And why should they? After the team made a huge playoff rush, Benning "rewarded" them by... letting three big players walk away for nothing and brought in literally nothing.
Tanev may be "one guy," but that one guy is someone we've been looking to replace for half a decade.