I think if Norris plays every game or say 75+ games and there's no significant injury there is the potential you could trade him. Especially if he hits the 30+ goal mark which he's on pace for over 82 games.
You see glimpses of speed. You see him being physical occasionally. He can't be a center who drives a line but if you can find him the right wingers maybe he gets it done. I think there's a GM who would gamble on him provided they see 75+ healthy games and nothing related to the shoulder for any games he misses.
But Tkachuk is who you dangle out there. For some reason a huge chunk of fans, the media love him. I'm assuming many GMs feel the same way. He's not bad but he's not Matthew Tkachuk. He's not going to be a top line guy who can drive offense.