Here we go with trading Kadri again!!!! He's going no where. You don't sign Tavares to trade Kadri. Two vastly different players and both needed. Tavares is signed to strengthen our center position with the Bozak loss and no one internally to replace him.
If we need to trade anyone to be able to acquire Tavares as a free agent it would be Gardiner or Zaitsev. But I personally do not see that happening to be able to get Tavares.
I would rather target a true second line center like RNH. Trade Edmonton Gardiner and Brown along with a pick. He fills the Bozak void, and provides Edmonton with what they need, offensive D and winger. In turn the Gardiner and Brown contracts equal what RNH makes. Use the freed up cap from the departures of Bozak, JVR, Komarov, Moore, and Polak to fill in 2 dmen and a 4th line center. There will be better dmen available on FA market then Gardiner (ie Karlsson, or Da Haan), not to mention a better 3rd pairing guy then Polak. We then need to replace the Plekanec or Moore loss at the 4th line C spot.