Start over with a new one. You cannot cure his inability to understand that people are not turkeys. There was a Texas veterinarian show where the vet gave tom turkeys testosterone inhibiting implants.
I have people that get me to raise their poults for them. My turkeys are not human aggressive. They don't follow me around or get in my way. They will not come within arm's reach of me.
I go out of my way to make sure that I do not imprint them. They act like turkeys and not like pets.
Aggression in turkeys can be related to diet.
Food effect on aggressive turkeys.
In my experience, human aggressive turkeys are almost always due to the turkeys being imprinted by people when they are poults. The imprinting removes their ability to understand that people aren't turkeys.