i hear what u are saying but leshore could be a stud for you he is a starting rb on a majority of teams in this league. i mean the only reason he is a backup is ray rice.
leshore is in his high 80 and can still progress to be a ninety. koppen is pretty much done he is a one in done and charles doesn't egual out the difference if you were trading him to young high 78 maybe but not a person who is going to retire after this season