Goaltender prospect Yaroslav Askarov asked for a trade, and the Predators quickly found a new home for him. Nashville shipped off Askarov — who was the Predators’ first-round pick in 2020 — a 2025 third-round pick, and Nolan Burke to San Jose for forward prospect David Edstrom, a conditional first-round pick in 2025, and goaltender Magnus Chrona. Here’s what you need to know about Nashville’s…