That eventual Trey benson return. Worth keeping?

I’m a 10 man PPR league at 2-3 currently. I drafted Conner but lost him to his ankle exploding so I made a trade for Trey benson only for him to get hurt almost immediately afterwards. I currently have Bijan, ETN, Carter and Tyrone Tracy. Do i try and trade for another rb (got a offer lined up for a Montgomery/DJ Moore swap but that’d put me with 3 rb with a week 8 bye) or do I hold for benson and think he’ll return at the level he was? My wr are: DK, Moore, McLaurin, Diggs, Hollywood Brown and Shaheed.