White Sox would probably prefer prospects in the lower minors, which works for us, would be nice to keep our main AAA guys plus Cam Smith. Maybe they'd get someone like Cruz, Rojas, Mathis, or Valdez or someone else from us. Mariners have to give up a bunch to get Nico.
Between Shaw, Triantos, and Cowles (with Busch in the back pocket) you could imagine we should be able to get maybe 2 WAR a year the next 2 years out of 2B without Nico. If you can extend Crochet this is a no-brainer trade you make, he's projected one of the best SP in baseball next year.