To take Mrazek I'd want a solid prospect and a 2nd rder
Yeah I don't think that's at all realistic. It's more of the hyper sensitivity to contracts that you see on HFboards.
Mrazek, to a team like Chicago, would essentially be a throw-in... maybe he's worth at 5th, maybe he should need a 5th to take on.... at the end of the day, gets Chicago a reasonably competent goalie without having to commit any sort of term to.
Let's also not forget to truly analyze the potential buyers for Fleury -- there's 3 of them.
One is Toronto, who'd have to send back Mrazek without question. He may not want to come to Toronto.
One is Edmonton, who would likely have to send back Koskinen. Of course, that's not a big deal from CHI's standpoint, but I cannot recall a time when a playoff-hopeful team traded their #1 goalie at the deadline. If he doesn't want to come to Toronto, he's less likely to want to go to Edmonton.
One is Washington, who would likely require double-retention. Even with double-retention, there would be a challenge with the fact that their current goalies are 25/26, and that the Caps may not want to lose either one of them (again) given Fleury's age, which in turn would create cap challenges in trying to maintain 3 goalies on the roster.
That being said, if Washington is willing to trade Samsonov for Fleury, that's ultimately where he should probably end up.