Raheem Mostert was the RB4 in fantasy points/game last year, he had a 45 point outing last year, so you as well be trying to get Mostert at least for the games he is healthy for - and hey, if he gets hurt or is washed it is what it is at his discounted price, because he still has Top-10 upside if he stays healthy, and has Top-5 weekly upside in the games he's healthy for. Among the 23 RBs with 200 or more carries last year, he was 3rd in yards after contact/att and 5th in missed tackles forced/att, and he was one of the highest rushing yards over expectation/att. So if I don't have Achane on my roster, I'll probably be aiming for him when I'm dipping into Miami's backfield for fantasy this year.