I am really not worried at all about this supposed "cap crunch". There will be cap casualties, but it won't be Marner/Matthews/Nylander on this team. Dubas and co know you keep your best players and surround them with good, cheap ELCs (Kapanen, AJ etc.). Realistically speaking, you sign Nylander to what, 6.25x6? He has no more leverage at this point in time. Term is good and the cap hit is good and right in line with his own peer comparable(s). Matthews likely comes in at the 11-12 range (anything less than 12 would be nice given his likely huge season this year). Marner's comparables put him in the 7.5-8 range but I'd bank at 7.5 (unless he brings in some serious hardware like an Art Ross and or Conn Smythe). That puts you in total...
11+11.5(12)+6.25+7.5 = 35.75 tied in to the "big 4".
Then, you factor in Gardiner coming off the books, Hainsey and Marleau as well, in house replacements in Dermott, Oz and Kapanen, and the situation isn't this "doom and gloom". I would bet money on one or more of Sandin/SDA/Liljegren/Durzi hitting their ceiling or a decent ceiling as well. Cap is likely going to marginally go up over the duration of these contracts, so the percentage it takes up depreciates over each passing season. Guys like Hainsey, Marleau, Gardiner and sooner or later, Andersen end up being casualties in a cap world. That's why you hire great scouts to find in house replacements to keep the stock going.