Im told Senators are actively seeking a trade of D Zaitsev

he has a M-NTC, 10 teams, he already blocked one to Vancouver, could very easily have Montreal on his list as well

Wonder if Anaheim could be a fit. They have plenty of cap space

I dont know what he is prioritizing on his list, desire to win? better tax situations? Lifestyle location?

To be honest if he values his desire to win his cap hit doesn't, I don't think any playoff team will take on 4.5M$ on cap for him and Ottawa is looking to offload so they won't retain. Tax, that has Florida written all over it as they have no picks and aren't making it to the playoffs either. Lifestyle, if he likes it in Ottawa or has his family (If he has one?) settled well Montreal makes sense has it's the closest destination.
Time will tell but certainly all non playoff teams must be calling to inquire.

Considering Dadonov also used his no trade clause instead of going there, probably not. Going from a no income tax state to California's high taxes is certainly different but Ontario still is taxed less than Cali in a high tax bracket. And he's certainly not waiving to go to Quebec's even higher tax bracket.