Ok, in your case, I'd keep Manning.

 

In the other guys case where teams are keeping 3 players, he should keep a (possibly) elite RB. Doug Martin was elite his rookie year, before getting off to a slow start his sophomore year. I'm trying to buy low from the Martin owner in my dynasty league.

 

In a 12 team league where everyone keeps 3 players, you can get the top 15-20 RBs are all being kept. You don't make a RB that most sites rank as a top 5-10 RB next season back into the draft.

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