Mack for Bell

I was offered Bell and Dede Westbrook for Mack and McLaurin in a dynasty league. Fair trade?
My current team is

QB: Goff, Dalton
RB: Barkley, Conner, Mack, Kerryon, Henderson, Edmonds
WR: Julio. Ridley, Boyd, D. Robinson, Campbell, Hardman, K. Johnson, Mclaurin
TE: Henry, Hooper, Dissly