Liverpool-Atlético and Napoli-Arsenal headline September 9 fixtures

The September 9 programme features Liverpool vs Atlético Madrid and Napoli vs Arsenal, alongside PSG-Slovan, Sporting-Galatasaray, Barcelona-Feyenoord and Stuttgart-Viking. Napoli team news includes Scott McTominay's reported absence and further midfield concerns, while possible Arsenal rotation and predicted lineups remain provisional.