But if you are going to take the brunt of the responsibility and do all the physical work involved, he'll be less reticent. In the end, it must be his choice, but don't make him think what he decides must be final. Leave it open ended. He could come with you now and go back later. He could stay in Akron now and move out to you later.
Nothing needs to be permanent.
Hang loose, don't get too serious about it, don't talk about never seeing him again, or anyone giving up on life. 82 is not the end of the world, it can be a great part of life. I wish the two of you many more years of enjoyment.