Run from this guy- you don't need this kind of business. He is a dead ringer for the hazardous attitude of antiauthority, an accident waiting to happen. If he knows his airplane so well then it should pass an annual with flying colors. He is flaunting the regs and playing games with your safety. Tell him he can get the annual then the BFR, otherwise he has no airplane as far as you are concerned. You will be held responsible when he crashes due to flagrant regulation breakage, as Rick says.