It's time for annual evaluations and setting goals for the new year. The boss wants to talk about the career path I'd like to take. The problem is, I don't think I have a future here, as my title and salary don't reflect the work I'm doing; indeed, while I got a raise this year it's less than wage inflation for my specialty, so I'm farther from a market salary than before. There's no career path for my position here, either, my role is basically unique. So an honest answer to his question would be "working somewhere else, where I have a future."
I don't want to tip my hand, but I won't lie to my boss, he's a good guy. What can I say that won't ruin my current environment or imperil my immortal soul (figuratively speaking)?
I appreciate the virtue of caution, and I may give my boss the simple truth, but there are some reasons to think that what I want simply won't happen here. Please assume that I have indeed written off my current employer. What can I say that's not dishonest nor gives away my plan?