The Premier League’s 20 football clubs will vote tomorrow on whether to scrap video assistant referee (VAR) technology. Five years ago, when it was first introduced, VAR was heralded as a foolproof system. Sneaky handballs, unfair red cards, onside-offside mix-ups: all would be gone. The refereeing would be perfect. But, even after five years, VAR is still too slow and its decision-making too opaque.