Zeke has value, if you can re-do his contract to make him worth the reduced number of carries. After all, he got 12 rushing tds last year, tied for 3rd in the league. Last I looked, tds are important. And for all of Pollard's good play, he had one td per about 21 rushes, Zeke one per about 19 rushes.
IF he can avoid injury, he's still a better running back than half of the league, even dealing with a knee brace a lot of last year he had some good runs. The ability to get the tough 2-3 yards for first downs is an asset to the team.
He won't ever be the Zeke of 2018 but not many backs are.
It will all come down to the cap, as is often the case....