During the season, they have established youngsters Santana and Vargas. Regulars certain for next year are Mauer, Dozier, Plouffe, Arcia, and Suzuki. They are returning both Pinto and Hicks. I think that is almost all of the position players that will be heading north from Fort Myers in late March/early April. Within a year from now, we may see Buxton, Rosario, Sano and maybe Polanco.
To me, the pitching side is much less defined and predictable. I'm almost certain that, if healthy, Meyer will be promoted before midseason. We'll also see much turnover in the bullpen. There really isn't much to promote right now.