Grade sorrel gelding

This is an athletic horse. He feels leg pressure good and can travel out great but will need an experienced rider who is consistent. Here’s the deal-if he isn’t ridden down, he bucks after you saddle him as soon as you go to lunge him. Once his fit is over you can hop on and he is good. The longer he has off the more he seems to forget. When I have ridden him consistently he acts fine but give him 3-4 days off and he might buck when lunged but then will be fine. He is friendly and easy to catch. I’ve roped a calf on him and ridden in the mountains and he has done great so he has potential for the right person. 6 yrs old $4k obo