The Denmark international is set to leave North London this summer but is unlikely to head to the KC Stadium after Bruce suggested his expected transfer fee of at least £3million plus £50,000-a-week salary would be too much.
"Nicklas, I've had twice (on loan at Birmingham City and Sunderland), and there's no question about his ability," Bruce told Sky Sports News.
"It's obviously, when you're coming from a club like Arsenal, a) can we afford him? and b) would Nicklas want to come to us?
"So, all of those questions we have to ask ourselves and the big thing is the financial one.
"I think as a club a few years ago it got itself into a mess and, if it wasn't for the owners now in charge, then the club would still be in a mess.
"We have to be well balanced and afford what we can afford, and not send the club, if we don't succeed in what we want to do, into an abyss. We've got to be mindful of that.
“Nicklas Bendtner, without question, has got huge talent, but he might just be too expensive."