Montgomery for Keenan Allen in a 12 team .5 point league

Need help here guys. I have been plugging and playing Montgomery off and on in my flex. Currently have Zeke and JTT as my starting backs. Malcolm Brown on the bench. Starting WR’s are Hot Lockett and Godwin but Godwin is hurt. Is there more value with Keenan now that Herbert is the starter or should I stick with The Mopportunity?

I’d take that trade.