Europa League action on Thursday. The Parkhead club welcome Bayer Leverkusen for their second group game, having been on the wrong end of a thriller at Real Betis in the opening round.
Manager Ange Postecoglou is uncompromising in his devotion to open and attacking football, and will be sure to go for it against the Bundesliga outfit.
At the other end though Celtic will have to worry about 18-year-old rising star Florian Wirtz, already a German international and linked to Real Madrid.
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