Then you ditch Saros when Askarov proves himself. Christ, it's not rocket surgery
I think the main problem here is that you assume Saros will be easy to move. I have no doubt he will still be a good goalie in his mid-30s, but he will likely have a NMC or NTC that will make the return very minimal and potentially more of a cap dump.
Even coming off of a mediocre season, his value was highest right now. Higher than Askarov's perhaps, for reasons you've stated. It's more just poor asset management which HFBoards hates.
While I completely get where you're coming from, I still think this more than likely leads to and Askarov trade, as he might even ask out, or his contract demands will be too high to make sense for the Preds. Like others have said, Trotz has already explored putting him on the table.
If you want to keep your young goalie, trade Saros at his peak value and acquire a vet like Gibson or someone to ease in Askarov and share the load until he takes over. Saves you cap space and gives you more flexibility while improving your team overall.
The Preds chose Saros. We will see if it is the right decision. I'm not so confident he can bounce back and put up top-5 numbers consistently. If his numbers drop more towards this year's level, this contract will look real bad real soon and now you're committed.
I don't think anyone is advocating throwing Askarov to the wolves, but now you've almost completely blocked his path.