Wiki has him as 98kg... Val is 90kg, so that's not a bad weight to be around for a centre.
I think Jesse could use an extra step of pace anyway and don't think the way he plays depends on being as big as a forward. I'm tipping it'll do him wonders
So if we assume that was his old 'playing weight' and he was a bit over during previous preseason (maybe 104/106) dropping 10kg from "this time last year" could mean he is around 94/96kg
I wonder if we identified fatigue as an issue for him and looked to trim him down a bit of excess weight
If you start Kayo stream and go about 35 seconds in he is in the middle of the screen. I'd say he still looks big across chest/shoulders and thighs, waist/stomach is quite slim, maybe a little off the biceps aren't massive?
So I'd assume it is mostly fat he has cut
He certainly wasn't 'fat' before, but does look to have a bit more of an inverted triangle going now.