According to German Sky Sports, Diaz had a knee pain after the warm-up game, but it was not serious.
Bayern beat Lyon 2-1 in the warm-up match, and Dias came on as a substitute to make Bayern's debut and create points. Media pointed out that Dias expressed knee pain after the game. After a brief treatment, Dias quickly gave a thumbs up and was able to enter the player's passage normally.
source:hk 7m