"I'd love to get him here," Worthington told the Norwich Evening News.
"He's a quality player, there's no question about that. It's just a case of giving him the right kind of environment where he's happy.
"I know he'd be very, very well received here, and rightly so. He did a magnificent job for Norwich in what were difficult times for the football club.
"I think it's highly unlikely Newcastle will go down that loan road," added Worthington.
"He'll either be a Newcastle United player and stay there or there will be a sizeable transfer fee paid and he'll get a permanent move somewhere."