The Gunners scored four against PSV to mark their return to Europe’s top table on a thrilling night at the Emirates Stadium. Manchester United, meanwhile, conceded four against Bayern Munich in a rollercoaster 4-3 defeat.
Earlier in the night, Jude Bellingham continued his fairytale start with last-gasp winner as Real Madrid edged past Union Berlin.
Opening night saw Newcastle’ return to Europe’s top table and pick up a point away to AC Milan, before Barcelona eased past Antwerp and holders Manchester City were forced to come from behind on their way to beating Red Star Belgrade.
Paris Saint-Germain were too good for Borussia Dortmund at the Parc des Princes, while Lazio goalkeeper Ivan Provedel scored a remarkable equaliser with the final kick of the game against Atletico Madrid.
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