It depend on where you put Murray in all of this, he has played like a top 10 goalie all season long and in the playoffs he was a top 5. He's only 22yrs old and signed to a good deal, there are a lot of teams that were done in because of terrible goaltending this year with teams like the Flames, Flyers, Jets, etc etc...
Just an FYI, MAF outplayed him the latter 1/3rd of the season.
It's not a tough decision at all. Goalies don't typically bring the market value you'd hope for, and especially not when everyone knows we need to get rid of one of our goalies. That kills both Maf and Murray's value.
So...you go with the young goalie. It's lunacy to want the goalie in his 30s over the one in his early 20s, especially when by every objective metric the young goalie has outperformed the older one.
Maf is having a hell of a run and I'm proud of him, but 8 strong games don't suddenly make him more valuable than Murray to this franchise.
By how much though?
MAF last 4 playoffs (including that 1 game in Tampa where he hadn't played in 8 weeks): 15-13, .923%, 2.38 GAA
MAF last 3 playoffs as starter (excluding last year): 15-12, .925%, 2.35 GAA
MAF in 13/14, 14/15 (just to show the impact this year has): .919%, 2.32 GAA
Murray: 15-6, .923%, 2.08 GAA
I'm not seeing much of a difference in the PO numbers - and certainly not something I'd be bragging about.
MAF 13/14-15/16 RS: 108-55-20, .919%, 2.33 GAA
MAF 13/14-16/17 RS: 126-65-27, .917%, 2.44 GAA
MAF 2016/17 RS: 18-10-7, .909%, 3.02 GAA
MAF From 2/15/17+: 4-3-2, .925%, 2.58 GAA
Murray From 2/15/17+: 11-4-2, .920%, 2.64 GAA
Murray 2016/17 RS: 32-10-4, .923%, 2.41 GAA
For me it's not a matter of who's better or not, because I really do not think that the difference is that great. Sure the numbers this year in the RS for MAF are bad, but around mid Feb MAF finally found his game and got back to his historical numbers. And it's not like Murray's numbers this year are much different than MAFs historical ones. And while his playoffs this year are great, they're also not massive improvements over his historical numbers. Improvements yes, but not ones so amazing that they'd never be reachable again. Neither are Murray's playoff numbers all that different then MAFs playoff numbers prior to the last 2 years.
That said, it's just the age thing. Murray is young enough that he will be here throughout the prime of Crosby, Malkin, Letang and Kessel's careers. MAF could be, but I'd really question anyone who thinks that MAF could be as good as he has been the last few years for another 5+ years. So unless someone is offering something completely over the top, I'd pass and just move on from MAF.