The 90km of flat to start makes the break hard to predict but ...
Maybe I'm biased because his earlier stage win was lucrative, but why wouldn't Bouwman win again?
He is highly motivated for not just the stage but for KOTM.
His strength on the flat gives him a better chance than most of making the break,
He also has some big engines (Van Emden and Affini) to help him get into the break on the flat.
He's taken it easy in recent days.
If he's part of a small group sprint it is unlikely anyone will be faster than him.
What worries me a bit would be a scenario where there is a small group on the final climb and everyone attacks each other.
The way I always look at it is (chance of him making the break) x (chance of the break surviving) x (chance of him winning from the break). The figures are highly subjective, and dependent on who the other riders in the break will be, but my best estimates are 0.3 x 0.8 x 0.25 = 0.06, therefore basically making him a 16-1 chance of winning the stage (current price around 22-1).
Arensman is the other one I like, now that he is totally freed up. But his price is shorter than Bouwman and he isn't as fast in a finish.
As an aside, I think this is the decisive stage for KOTM. I'm sure KOTM will be won by a non-GC rider, of whom the leading three are Rosa on 92, Bouwman on 69 and Kamna on 43. But there are huge points on this stage, with two Cat 1s (40, 18, 12, 9, 6, 4, 2, 1) and a Cat 2 finish (18, 8, 6, 4, 2, 1).
The big advantage Bouwman has over his two main rivals is his kick. If Bouwman is in the break then he is highly likely to take maximum points on the first climb and probably the second.
I've therefore had a good crack at him for KOTM at 4-1.