This trade works if Ottawa manages to get rid of Zaitsev's contract (by trading it to a team like Arizona who are still under the cap floor). Barrie has better PPG production than Zub but is older, and Puljujarvi still has potential to be a Top 6 winger.

Tempting offer. I would decline if I was Ottawa tho.
Zub has better point production when he lines up with Chabs. But they got split up at times last season.
They need to keep Zub/Chabs top pair. And add a RHD for the second pair.
Sanderson-Barrie could look good. But it would have to be prospect and pick(s) for Barrie.
Sens are pretty loaded up front, i dont think there is a need for Pully. DeBrincat and Stu need new contracts next season. Same time as Pully. Of the 3, which one would be the odd man out?

I think OTT declines. Zub has fit in nicely in OTT, and Barrie can't defend his way out of a wet paper bag. Pulijarvi, though a decent piece would be wasted on this team. He needs to be in a top 6 role to be effective, and there's no way he makes that based on OTT's current top 6.