I'd let him go. I'm luke-warm on Morris. He was winning me over towards the end of the year with the defence's much improved play... but then proved against the 49ers in the last game of the season, for the 100th time, that he cannot defend the methodical type offenses that want to dink and dunk in the short to intermediate range. He has the rest of the playoffs to win me over. But Kyler Murray type offenses were never the type the Rams had to improve against, as good as last night's showing was. Let's see how the Rams do vs. Tampa Bay, GB, and/or San Francisco...
I am not sure turnover - yet again! - is a good thing. But Morris is not a good enough DC that I'd want to block someone from a promotion. Good organisations that want to continue attracting top-end talent will celebrate the success of their own, even if it leads to better opportunities elsewhere.
It's unreal how many coaching assistants the Rams have lost yet remained competitive year after year.
Interviews and interview requests should not be allowed until the off-season, IMO.