Jurgen Klopp has admitted he’s ‘broken a promise’ after comparing Liverpool’s 4-1 win over Luton to their memorable victory over Barcelona back in 2019. The Reds fell behind in the 12th minute when Chiedozie Ogbene opened the scoring for Rob Edwards’ side. But Liverpool came roaring back in the second half, with goals from Virgil van Dijk, Cody Gakpo, Luis Diaz and Harvey Elliot giving them all three points. It was a stirring comeback at Anfield, with the result moving the club closer to the Premier League title they crave. Klopp has now compared the result to when his side thrashed Barcelona …