You'll get a lot more for Tuch if you trade him now, particularly if an extension is part of the deal. The new team gets 3/4 of a season.
If you wait until the deadline and he's decided to go to UFA, you're getting a playoff contender's late 1st and a tweener like RosΓ©n who you add to your lineup next year -- and could be good down the road.
Something like: inquire to FLA about Samoskevich (key piece - will be RFA at the end of the season perfect for Sheevyn, but he plays like Doan), BBQ Luostarinen (cap piece, but valuable to playoff teams and someone you could easily move at the deadline if need be), and ... their 2028 1st is the only one they have left. They want to get back on pace before 2026, because Tkachuk might not be enough. Panthers have plenty of cap next year with Bobrovsky coming off the books, plus Tuch would sign for $7M there.