Former Vegas Golden Knights coach Bruce Cassidy will be the most sought-after candidate when coaching jobs become available throughout the NHL. The Edmonton Oilers may, or may not, be looking to interview Cassidy, but a report from national insider Frank Seravalli suggests the Knights will not grant permission just yet to their Pacific Division rival. According to the report, the Oilers have asked the Knights for permission to interview Cassidy, but the Knights are withholding Edmonton from doing so at the moment. Seravalli reports that the Knights are keeping the Oilers in the waiting game as they continue their second-round series against the Anaheim Ducks. Attempts to get a comment from the Knights on Tuesday were unsuccessful. The report also notes the Knights could be withholding the Oilers from interviewing Cassidy for a job that’s not even open yet. Coach Kris Knoblauch, who took the Oilers to back-to-back Stanley Cup Final appearances, is still under contract.…