Check/call and even overcall.

The value bet is thin and button is capable of bluff raising the river with his stats. He's also very capable of bluff betting the river when you check. Then only problem with checking (besides missing a very thin value bet) is when button bluff bets and SB raises with something worse than you have. I don't see that happening much here given SB's passive nature, but he may call light. Keep that in mind if you're thinking about folding instead of overcalling.