Keep or Drop Gurley in Salary Cap League

$200 Salary Cap. I can keep Gurley this year for $50 which I signed him for 3 years ago or drop him.
I also have Kamara for $1 which I signed him as a rookie. Cant decide to just keep Gurley or drop him and get a different RB. Some of the top players available to me are Hopkins, Julio, OBJ, D.Johnson, M.Thomas, Conner, M.Gordon, Kelce,

If all of those players are available, I wouldn’t spend 25% of my cap on gurley. I still think he will be good this season, but not for that much. How many roster spots do u have and what do u have to start?

15 roster spots. The only other player I have is Kamara for $1. Any new player I get, I can put them on up to a 3 year contract for what dollar amount I get them for