Coaches and club executives have complained about refereeing decisions for decades, and VAR has done little to change that. If a controversial call is made, you can pretty much guarantee one side will be upset about it.

Hansi Flick and Barcelona were furious over what they deemed to be a VAR mistake on Robert Lewandowski's disallowed goal.

Barcelona manager, Hansi Flick has insisted that his team were denied a “ valid and clear goal” during Sunday’s La Liga defeat to Real Sociedad. Barcelona striker, Robert Lewandowski thought he’d opened the scoring in the first half against Real Socieded.