12-team 0.5ppr league that only starts 2 RBs (flex is wr/te only)

My RBs are Charles, Woodhead, Andre Brown, and Miller….WR's are Antonio, VJax, Allen, T Williams, Boykin….TEs for what its worth are J Reed and V Davis

I'd love to get Marshall for the stretch run and wondering if I should make an offer of an RB+WR for Marshall?

Marshall owner is 4-6 and in 10thplace, so he needs to keep winning. His rbs are weak (Mathews, Rice only)