Canny Premier League managers should be seeking to "manipulate" VAR technology to their advantage when it is introduced next season, according to analyst Rory Campbell.
VAR (the video assistant referee system) was largely deemed a success at last year's World Cup in Russia and is being used in many domestic leagues including Spain, Italy and Germany.
But England-based players have had a slow introduction to VAR, which has been used in the Champions League knockout phase and some FA Cup games this season but will be rolled out in the Premier League in the 2019/20 season.
Campbell, who has worked with West Ham in the area of technical analysis, said managers should take the time to find out how the technology will impact the game and how they can stay on top of changes.
"If I were a manager I would be putting in huge resources as to how we are actually going to manipulate VAR -- how we can understand how to use it to our benefit," Campbell said at last week's Betting on Football conference in London.
Campbell, owner of consultancy firm C&N Sporting Risk, said managers could learn a lot if they get to sit down with referees before the new season starts.