It really depends on whether he recognizes the value of Ott in a league with your categories. It really isn't an extremely low offer given that you count PIM and Hits. Plus Ott can contribute FOW from the LW slot which is always a bonus (Benn has LW eligibility on Yahoo too though, so not a major gain).
If I were the Benn owner, I would definitely consider Ott a huge asset coming back my way, but I would want a better player than Flash included.
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14 Team 22-man H2H Keeper League (Keep 15 - 4th Year)
C - Malkin (RW), Backstrom, E Staal, Stoll
LW - Zetterberg (C), Datsyuk (C), Whitney, Latendresse, Ruutu (C)
RW - Backes (C), Clowe (LW), Perry, Skinner(RW), Frolik (C)
D - Chara, Letang, Shattenkirk, Carle, Girardi, Giordano
G - Rask, Schneider, Fleury