Need Waiver Help!

So I’m currently in a 14 team, full point ppr league. My team is 4-3 and seems to be up and down every week. My question is recently A. Collins, T. Cohen and Ty Montgomery all were dropped. I can pick them up this Sunday. My plan is to drop Charles Clay. My question is who would you pickup for the rest of the season or would you hold onto Clay? Leaning towards Ty Mont simply due to upside potential. My lineup is as follows:
QB - Deshaun Watson
WR - Demaryius Thomas
WR - Willie Snead
RB - Lev Bell
RB - Doug Martin
TE - Kyle Rudolph
W/R/TE (Flex) - Marlon Mack
K - Hauschka
DEF - Philly (Jags on bye)
Bench: Deonte Thompson, Rishard Matthews (bye), Sterling Shep (bye) Charles Clay, Jags D (Bye)