The clip is presumably from the midseason premiere, as it finds everyone still at Hilltop going over the logistics of taking on a group like the Saviors.
Following the recent midseason finale, it was made clear that Rick would no longer remain in service to Negan.
The show made that abundantly clear after spending the last eight weeks demonstrating just how formidable an adversary Negan is.
And when that knowledge gets back to the man in charge, Rick had better be prepared for retaliation.