I think there's 2 scenarios.
Scenario 1 is if Colas breaks with the team out of ST. Then I think we end up seeing Burger in AAA. Zavala, Leury, and Sheets are probably locks. The 4th spot is a fight between whichever NRI OF has the best ST. Marisnick probably makes the most sense as he can actually play good defense. Hamilton seems like a nice guy to have around for pinch running and late inning defense, but I don't think you want him for anything more than that. Victor Reyes offers switch hitting, but his defense is really bad.
Scenario 2 is Colas is in AAA to start the year. Then I think you end up with Sheets and Eloy splitting time in RF. In that scenario, Burger probably makes the team.