He still has a year remaining on his Carrow Road contract but, after seeing out the 2012/13 campaign on loan at Cardiff City, he has been informed that he is free to find himself another club during the current transfer window.
Hughton said in the Pink Un: "At the moment he is not in my plans. He has shown a desire to play regular football, and of course I can understand that.
"He went out on loan to Cardiff and what he would like to do is go and play somewhere where he is going to start on a regular basis. That is simply the only reason we have not brought Leon out here to America.
"He is a good trainer, he works hard every day and I have no problems on that score, but certainly at this moment he is not one that would be in my plans for the season."