Leeds United were hit with an outbreak of illness heading into their final warm-up game ahead of the return to Premier League action. The Whites were comfortably beaten by Ligue 1 side AS Monaco in a second-half capitulation.
Despite taking the lead in the first-half, the visitors scored three goals inside nine minutes to race clear of the Whites at Elland Road. It was a worrying sign for the onlooking Leeds fans, with Manchester City and Erling Haaland their first game back in action after the World Cup break.
When asked about the second-half collapse, assistant boss Rene Maric said: "First half, we started on it from the beginning. We missed that in the second-half. How you move, react, at such a high level, a split-second earlier, faster, the space they don't get. Defending a lead by staying proactive and aggressive."