If Diamondbacks trade an outfielder, who is most likely to move?

Diamondbacks GM Mike Hazen is considering trading one of his young outfielders. Hazan believes that moving one outfielder would help them arrive at a path toward contention. The Diamondbacks want to move an outfielder if they can plug one or more holes on their roster.

Corbin Carroll, Jake McCarthy, Alek Thomas and Daulton Varsho are Diamondbacks' outfielders. They are at the winter meetings at Manchester Grand Hyatt.

Diamondbacks are interested in trading Corbin Carroll. He's one of the most highly regarded prospects in baseball. Hazen has always said he listens on everyone. He is unlikely to make a big offer for Corbbin.

Jake McCarthy is not a prospect, but he has a lot of potential. He is fearless on the bases and plays the game with a pedal-to-the-metal zeal. McCarthy might mean more to the Diamondbacks than to another team. He has an adaptable swing that allows him to make a a great deal of contact.

Daulton Varsho is the most established center fielder available. He has two-plus seasons of experience and four years of club control remaining. Varshino is arbitration eligible for the first time this winter and is about to become more expensive. His batting average and on-base abilities are not very good, but he has power and he's a good defender.

Alek Thomas is a good defender but a poor hitter. He is not established yet, but he has good athletic skills and good floor. Thomas has six years of club control and is still young. He was a finalist for an award but didn't win. If Diamondbacks trade an outfielder, who is most likely to move?