It is a civil matter, not criminal law, but likely will be settled out of court. Guy's lawyer will meet with B.C. Place's insurance claim adjuster who at best might offer to rescind the B.C. Place imposed one year ban and then probably with conditions such as agreeing not to consume alcohol while at games . Any cash payout would for starters need a doctor's report detaining injuries found upon examination.
There also could be a cash payout to make the guy's lawyer go away if BC Place or the Lions feel the case is bringing bad publicity to the team. Or it could be the opposite if it is felt that paying a drunk trespasser goes against public opinion.
OTOH we live in a country whose government thought it was necessary to pay $10M to a terrorist murderer because when he was caught and tortured by the Americans, Canada did not try to intervene on behalf of the terrorist.