According to We Got This Covered (thanks to JayClue for the heads up), looks like Beta Ray Bill and Quasar are joining the cast in GOTG Vol. 3 in the MCU.
Get your Thor #337‘s ready. This book has already seen some heat due to the fact Beta Ray Bill was part of the new Guardians of the Galaxy volume from Donny Cates and Geoff Shaw.
Quasar made their first appearance in Hulk #234.