Hughes had already made it clear, and Jimmy managed to salvage the situation a bit. At least he didn't miss this opportunity, but it's unclear what position Hughes has prepared for him.
Jimmy specially returned to Nia's house to talk to Kevin again about recent events.
Kevin wasn't familiar with the situation in the Manhattan office, but he still gave Jimmy some advice: keep a close eye on whether Hughes can actually save Peter and get rid of Director Karaway.
If Hughes can do those things, even though he's retired, he's still trustworthy, because this means there are comrades in the agency who share his stance, and the people above will provide him some protection.
Moreover, there's Deputy Director Dave, who is known to be quite interested in Jimmy. Although he's not at the top, he still has enough status to take care of Jimmy, a veteran detective.
