With the emergence of Dillon and return of Monty, would you rather have Aaron Jones or David Montgomery rest of season? Full PPR.
Monty will see the work but is on a bad, but getting better, offense.
Jones has proven he can be efficient with a split workload (remember Jamaal Williams?).
In having to choose one, I personally lean Jones as he has proven he can be fantasy relevant at a high level with a split workload and is on the better team.
As a side note, I have Jones and Monty, so luckily I dont have to choose. Good luck!