Agree that he is never folding a better hand on the river.

supahaole you shouldn't just generalize all 25nl players into 1 category. Some are better than the people lower but clearly this guy is a passive donk who most likely calls way too many bets.

On reconsideration, I agree with you guys that we can probably raise turn for value. He's def calling a turn raise with worse hands. For the sizing of that raise I think I like 3ish (maybe 3.5 but we don't want him to fold)

When we raise turn and he calls its because he doesn't have very many hands in his range that are ahead of us. Do you 1/2 pot or 1/3 pot the river after making the turn raise? Say we raise to 3 and he calls. Pot is now 10.05 on river I think I like a 3.25 bet here or something similar. A bet small enough where he cant fold his 9x or A2.