Just because the team hasn't asked him to waive his NMC doesn't mean they haven't made him available, or listened to offers, it just means nothing worth while has materialized. Which is expected when dealing with an over paid, under performing player. If Chiarelli isn't trying to move him, he's an even worse GM than everyone thinks he is. The team is cap strapped, moving out $6M would make a world of difference, and could easily help bring in someone far more effective than Lucic.
Why would Lucic ask for a trade? He's not performing well enough to demand anything, he knows as well as anyone else that no team worth moving too would be willing to take him and that contract right now, so, even if he does want out of Edmonton, publicly stating that is only going to hurt him more.
You are right, in that he won't be moved so long as he hasn't been asked to waive, but please, since you know better than everyone else, tell me that Lucic would turn down the chance to go play in Pittsburgh, or Washington, or Nashville if they made Chiarelli an offer worth while... He's a professional athlete, which means he's a competitive guy, he wants to win.