The 29-year-old, who signed for the club from Leeds United in January, spoke out after finding chances limited, with Hughton preferring the likes of summer signings Ricky van Wolfswinkel, Gary Hooper and Johan Elmander.
But Hughton has attempted to draw a line under the issue by confirming the striker will be in the squad to face Crystal Palace this weekend.
"We have a policy here at the club, and Luciano knows that should not have gone out in the paper, but that is something between myself and Luciano," Hughton said.
"It was disappointing but it is something I have dealt with in-house and is very much club business.
"What he has done is make everyone aware of the frustrations he feels. What he has to do is make those clear through the appropriate channels.
"The relationship I have with Luciano is very good and he is someone I have got a lot of respect for," Hughton added.
"He is a good lad and my door is always open. Will he be in the squad this weekend? Yes, he will. He is a very good lad, but in this circumstance he needs to do things in the appropriate manner."
Norwich have several players including the likes of Anthony Pilkington, Robert Snodgrass and record-signing Van Wolfswinkel unavailable for Saturday's match against Palace, but Hughton says this will open doors for others.
"It is part and parcel of the game and it will give somebody else an opportunity," he added.
"It is a problem all clubs have to deal with, and what it does do is test the squad.
"You realise you will go through bad periods on the injury front. This is a tough one and it is a test for the entire squad, but there is no point in getting down."