Arsenal's preparations for their upcoming Champions League match against Napoli have been thrown into disarray due to travel disruptions at UK airports. Mikel Arteta, Arsenal's manager, canceled a planned pre-match press conference at Naples' Stadio Diego Armando Maradona on Tuesday after the team's flight was delayed by air traffic control issues. The squad remained at their training ground in Hertfordshire during the delay before heading to the airport. They were expected to arrive in Naples around 9:30 pm local time (8:30 pm BST). UEFA has agreed to allow the cancellation of the mandatory press conference due to the delays, which also affected fans traveling to Italy for the match. Jurriën Timber is set to make his first appearance since Arsenal's Champions League final defeat to Paris Saint-Germain on May 30 after recovering from a groin injury. The Netherlands defender missed the World Cup due to the injury, which has plagued him since March. Arteta mentioned before Sunday's win over Chelsea that Timber was close to returning. However, Cristhian Mosquera remains sidelined with a muscle issue. Mosquera missed the match against Chelsea after suffering the injury against Aston Villa and was the only first-team player not to train on Tuesday, aside from William Saliba. Napoli, who finished as runners-up behind Inter in Serie A last season, have struggled in the current campaign under new manager Massimiliano Allegri. They won their opener against Genoa but suffered back-to-back defeats to Como and Inter Milan. Napoli are without Scott McTominay, who had successful surgery on Tuesday for an irregular heartbeat. The 29-year-old is expected to resume training in two weeks. They are also likely to be without André-Frank Zambo Anguissa, the influential former Fulham midfielder. Arsenal have started their title defense strongly with three consecutive wins, defeating Coventry, Villa, and Chelsea after their 3-0 Community Shield victory over Manchester City. Additionally, the club has signed 16-year-old striker Mylo Bernard from Crystal Palace as part of their first-year scholarship intake for the 2026-27 season. Bernard scored over 40 goals for Palace's academy last term and will sign professional terms with Arsenal when he turns 17.