Tell him you won't charge him anything to remove that eyesore from his place, and you'll even use your own tools, and clean up after yourself! If he bites, take 3 or 4 guys with you because those things are heavy!
Tie it off with ropes, and use a sawzall to cut along the bottom slowly just enough so it can be pulled over and down while the pole is bending along the cut, but not enough where it breaks off quickly and slams into the ground. Like cutting a tree, but without a wedge cut on the side you want it to drop to.