I think most people would build around him, but unless he is committed to staying here long term it is irrelevant.
He only has 3 years left, and his trade value likely drops by about 80 percent after July 1st if he asks out. People will say "yeah but we don't have to trade him if he asks out", but it never works that way in real life. It becomes too big of a distraction.
I would absolutely not trust a Tkachuk who tells me "Yes Mr. Staios, I'm so happy here, missing the playoffs is fun, no, my dad didn't tell me to string you along until my NMC kicks in." Which is not me saying the Tkachuks are bad people, but Staios would have to be an idiot not to see that they know how to play the game. Once July 1st hits, the balance of power shifts completely to Brady. To the point where giving the Senators a 3 team list is a major consolation. If you're Brady and you want out, getting to July 1st is important because it means you don't have to worry about getting traded to the Columbus Blue Jackets, and you can give the Senators a 3 team list consisting of Vegas, Golden, and Knights.
They are in a really tough spot because trading him as a precaution against the NMC is a crappy situation, but if they hold onto him and in January of 2026 he asks them to move him at the deadline, they aren't getting anywhere close to what they could have gotten for him if they decided to move him in January of 2025.