Football don't need VAR, VAR is so 1950s.
Football need AIR, Artificial Intelligence Referring. That's the kind of referring like in video games where a micrometer offside is indeed called out as an offside.
Surround the pitch with like 1000-2000 ultra high frame rate cameras and another couple hundreds or so of various sensors equipments, connect all the motions data to a cluster of supercomputers to analyze the data in real time, and officiate the match.
Maybe in the year 2100s