What could I do to get Latavius Murray?

Here’s my lineup. I want to get Murray to pair with Kamara. What could I do? I offered Pollard, but they turned it down. Should I offer Ekeler? Or Jones? Full PPR.

STARTERS
QB Kirk Cousins
RB Alvin Kamara
RB Chris Carson
WR Mike Evans
WR Adam Thielen
TE Hunter Henry
FLEX Austin Ekeler
D/ST Baltimore Ravens
K Jason Meyers

BENCH
RB Aaron Jones
RB Rashaad Penny
RB Tony Pollard
WR Calvin Ridley
WR Geronimo Allison
WR James Washington
WR Preston Williams