Columnist Jeff Blair pretty much said the same thing earlier today. Sure some GMs may feel the Leafs raised the bar for impending RFAs such as Sebastian Aho of the Hurricanes and others. But he stated that it's a Leafs problem & that their window to win a Cup is now and if they feel they needed to slightly overspend in order to get Nylander signed long term then it's their right.
The Leafs temporarily sent down steady defenceman Travis Dermott yesterday in order to make up some cap room to sign Nylander while they figure out what to do next. Well just about an hour ago they traded Josh Leivo to the Vancouver Canucks for some unknown minor leaguer in order to free up a roster spot for Nylander. He'll likely play next Saturday with a possibility on Thursday. But with the Leafs rolling without him in their lineup there's no rush to put him in the lineup immediately.
There's word the Leafs might try to re-sign Jake Gardiner this season. Once signed nothing prevents them from trading him during the off-season. At least they'll get something in return for him, unlike JVR who ended up an unrestricted free agent by the end of last season. The Leafs chose to keep him in their lineup for last season's playoffs instead of trading him at the deadline. It was a gamble they lost and lost him for nothing in return.