I've written before that the NHLPA did not contest Patrik Berglund's contract termination from Buffalo in 2018 because the player wanted no part of it. Don't know what Corey Perry's decision will be, but there definitely is a push for the union to grieve even if Perry declines. I don't know exact details and have no desire to minimize anything, but there are strong feelings the NHLPA cannot allow this precedent.