Bayern Munich's 3-1 loss at home to RB Leipzig on Saturday was played out in front of the watching eyes of over 30 clubs across Europe, 90min understands.
The shock defeat could well cost Bayern an 11th-successive Bundesliga title, with Borussia Dortmund moving ahead of them into first place with a 3-0 win at Augsburg later that weekend - BVB will win the league if they match or better the Bavarians' result on the final day of the season.
Representatives from several teams were watching on at the Allianz Arena, with sources confirming to 90min that a number of Premier League sides in particular were monitoring the many star names on display ahead of the summer transfer window.
Arsenal, Liverpool, Newcastle United, Manchester City, Manchester United and West Ham United were present in Munich.
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90min reported last week that Joshua Kimmich is considering his future at Bayern and Europe's elite clubs are being kept informed of developments.
Benjamin Pavard, who has been linked with a move to Barcelona, is believed to have been closely watched by Arsenal, Newcastle and Man Utd.
Arsenal, Liverpool and Newcastle were keeping tabs on Leipzig duo Dani Olmo and Dominik Szoboszlai. The latter scored the clinching goal from the penalty spot.
Man City still have Josko Gvardiol on their radar and used this an an opportunity to check in on him.
Joao Cancelo played 86 minutes for Bayern at left-back - 90min reported earlier this month is wanted by Arsenal once his loan from Man City ends.
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This article was originally published on 90min as Arsenal, Liverpool & Man Utd among clubs represented at Bayern Munich vs RB Leipzig.