Aside from second base, the Yankees are locked into their starters at every position heading into the offseason. I suppose they could always free up a spot with a trade, but that seems unlikely. Didi Gregorius and Brett Gardner are their only position players with real trade value. And I guess Greg Bird too. He’s not penciled in as a starter right now though.
Anyway, according to Jon Heyman, the Yankees are “leaning toward” using Dustin Ackley and Rob Refsnyder at second base next season. Both Ackley (161 wRC+) and Refsnyder (130 wRC+) impressed offensively in their late season cameos this year, but the sample sizes were extremely small.