ROS: McCoy or White in full PPR

Roster limit of 3RBs in our league.
My RBs: Elliot, Chubb, White

McCoy is available in FA and White is on my bench. FAAB ran last night and no one picked him up. It will run again Sunday morning. Even if he sits out, is he a more valuable stash (team, name recognition for future trades?) if he can get decent RB2 numbers?

Have no idea if White is the 2018 version or if Harris will get some time.