Let him walk was a poor choice of words. I meant to say I don't see JR trading him.
Do I personally like the thought of trading him if he wants a big cap hit? I dunno. Consider that an FA goalie would cost big bucks too, so how much are we saving really?
You're probably saving about $3 million or more if Murray wants a big cap hit, which is significant enough where you have to consider the option. You'd be looking at someone like Markstrom, Greiss or Halak in free agency to be a platoon goalie with Jarry, and I can't imagine that would cost much more than $5 million.
I'm also not sure he's an "average" goalie. Here are his save percentage finishes from 2016-17 to now. The filter I used was goalies in this report I ran had to have started at least 49 games in each of the seasons(as that is around what MM started). So, with that in mind, here are his finishes:
2016-17: 4th
2017-18: 19th
2018-19: 3rd
You can say I cherrypicked those numbers if you want but most any starter is going to start at least around 49 games like MM did, so I think it was a fair report to use. Those numbers don't seem to suggest he's average. If anything, they suggest he's elite apart from one bad season, but that one bad season is sandwiched between two very good ones.
Make that games played requirement 40 games and Murray falls to 8th, because Bishop (46 games), Lehner (46 games), Greiss (43 games), Khudobin (41 games) and Halak (40 games) all had a save% better than Murray's .919 last year and played in that many games. Make it 30 games and you add Campbell and Binnington. So yes, I will say that's a cherrypicked size
I also don't think just mentioning a goalie's rank is that accurate. Murray is 3rd in the sample you're looking at, but the difference between #2 and #3 is the same as the difference between #3 and #12. If you lower the games played requirements to 45, the difference between Bishop (#1) and Murray (#8) is the same as the difference between Murray and Craig Anderson (#32). Saying "Murray is essentially tied in save% with Price, Rinne, Andersen and Gibson" is a more accurate representation than "Murray is 3rd in save% among players with 50 or more starts".
I think Murray falls between the 9th best and 12th best goalie in the NHL. I think Bobrovsky, Price, Vasilevskiy, Gibson, Rask, Rinne, Bishop and Andersen (he's Murray if Murray had 5 years of what he was last year) are all definitely better, and I think Fleury, Holtby, Murray and Dubnyk (super underrated IMO) fall in the 9-12 range. To me, that is not elite. Murray may have been better Bobrovsky, Price or Rinne in any given season, but he's not established as being a better goalie. Murray is above average, but he's like 10th best in the league, not "let's give him a blank check" good.