At this time in his life he needs an experienced person with lots of time on their hand and patience. You will have to put a lot of time into gaining his trust and slowly and carefully re-train him as a riding horse. There are severe issues, stemming from an abuse situation, which was short, but has done a number on him.
Please , contact us for further information, your inquiry MUST INCLUDE your level of expertise, your riding style and the living conditions on your end and long term plans for the horse.