I don't even think Lebron is the intended audience.
"See, other GMs? Carmelo is worth just as much as Kevin Love! You'll have to beat that to pry him away from us!"
The flaw here, of course, is that such a statement is really only credible if the offer comes from the *other team* and not you. But hey, it's the Knicks. No one has ever accused them of being masters of strategic thinking.