I might let Borgman sit, actually. With Zaitsev gone, we need someone who can slide in next to Gardiner playing some large ES minutes. We also need someone to replace his role on the PK, or more accurately Polak's role as he'll slide up as our #1 RD on the PK.
Carrick can give us the first, but not really the latter. I wouldn't trust Marincin with that kind of ES minutes, but he is a terrific PK guy. Borgman in comparison is a bit of a luxury development piece. He basically only plays third pairing ES minutes.
So basically:
Carrick takes Zaitsevs EV minutes.
Marincin takes Brogmans EV minutes, and Zaitsevs PK minutes.
I think that's likely the best way to go.