I. myself, can't see him bulking up muscle wise and at his age, to make much of a difference.
But that's my opinion... getting that Oly-gold medal may be his motivation, but is that enough?
IF anything... getting ANY medal at 86Kg in the next Olympics would be an outstanding achievement alone!
(But, I don't see it happening... Chris Campbell in '92 Barcelona got bronze at 37 was indeed, an outstanding achievement.)
D3