The Irish Sun has a video of the young man. Nothing confirmed about reason for death. You just never know, do you?
To a lot of people betting on games taking place in distant shores he was just a nameless cog of a team whose recent stats suggested they either might win or lose their next match. A fixture on a coupon. But at the end of it all, a man has died, and I suspect localized gambling bollix.
That was my thought... took a bung off a gambling cartel to fix something in a game, and it didn't happen... They lost a shed load and weren't happy.