Ive explicitly said 'downing tools' would be not be right, and i dont think anyone else has suggested otherwise. He's allowed to say 'id like to join newcastle if the opportunity arises' whilst also still being commmited here if the opportunity doesnt develop. Saying 'I dont want to join newcatle' would be stupid and make no sense.
I dont really know what point youre arguing tbh.
Basher explains it well enough above.
I wasn't actually thinking about your posts, but multiple people come out with stuff like (quoting Alan on this page) "it’s only right for him that he jumps at the chance. If he slows down this season for us, he may never get an opportunity like it again.", like they're the player's dad or something!
And as for saying whether or not he wants to join Newcastle, he doesn't have to say/leak anything at all, same as most managers don't when talking about other club's players