The president of Uefa has warned he could block the use video technology in the Champions League and new Nations League after declaring it “too early” for the Laws of the Game to be changed to allow it.

In an exclusive interview with Telegraph Sport, Aleksander Ceferin claimed the introduction of Video Assistant Referees would cause “more problems” than it solved unless some of the issues to have dogged the new system were properly addressed.

The refusal of the second most powerful man in football to back plans to roll out VAR from the World Cup onwards came just days after trials began in competitive matches in England, continuing with Wednesday night's Carabao Cup semi-final second leg between Chelsea and Arsenal.

Chelsea were the victims of a botched VAR review last week in their FA Cup win over Norwich City, prompting former England captain Alan Shearer and others to brand the system “a shambles”.

There have also been problems elsewhere during two years of experiments with the technology and the game’s rulemakers, the International Football Association Board, stopped short on Monday of recommending the Laws of the Game be changed in March to include VAR from this summer.