What's equal value? Are you factoring in the considerable cap savings, and any issues keeping the player is having on the team?
I think the Rams could get considerable help with their depth, and keep or sign a good to very good player or two thanks to trading Donald. I also think that if Donald decides he will only play if he can force the Rams to pay more than makes sense for them that the Rams will not get much value by keeping him, especially since it will show other good players that they can break the Rams in negotiations. This after the Cooks and Gurley negotiations set good examples.
What would Gurley do if he sees that? Gurley was arguably the best player on the Rams last season, not Donald.