Oh I am sorry if I gave the wrong impression, its nothing ugly like unpaid board. Apparently my trainer was keeping him on basically as a lesson horse in exchange for free board so it wasn't that the owner wasn't paying it was that he didn't need to. She was basically allowing him to stay for free to help me out while I saved up to buy him, which was so incredible of her especially since I didn't even know that was what she was doing.
His owner has his own facility about 30 minutes from where I was keeping him. But my trainer needs the stall so she is telling him basically that he cannot stay here for free anymore. I am hoping for a few scenarios. Maybe his owner will offer to pay his board for him to stay, maybe he will allow me to keep riding him at his facility (which is actually closer to my house) or maybe he will realize exactly how few people are interested besides me and allow me to get a cheaper price. I guess like you guys said I just need to keep an eye on him for the next few months and keep track of him. He is aware that I am interested so hopefully he won't do anything like send him to a sale barn far away or anything, but I guess even if he does he will still own him and I will still be able to contact him if need be.
I guess the only thing now is to wait and see :\
There is something about the outside of a horse that is good for the inside of a man. ~Winston Churchill