I think you would have to look into the buy low / change of scenery candidates. 2nd rounder + prospect type of guys.
(WSH) Burakovsky 3 mill RFA after this year. ( not really buy low I think, but has been a healthy scratch numerous times this season).
(CGY) Bennett 1.950 mill RFA after this year ( 3rd liner in CGY, but might be a good winger for Mittelstadt)
(EDM) Puljujarvi 0.950 RFA after this year ( reclamation project, might not be worth it)
(MIN) Coyle 3.2 mill UFA in 2 years ( currently 3rd line center but can play RW to, been going down hill last two years in minny as a center)
Edit, I know besides Coyle these aren't centers, but I'm looking more into getting Mittelstadt a decent winger.