Forget marking Messi or Ronaldo, the biggest challenge in world football was getting 'Postecoglou' into a song, but credit to the Celtic faithful - they did it! 🎵 Look forward to plenty more chants for our Aussie great as the Scottish Premier League kicks off this week, live with beIN Sports on Kayo! 📽 celticfc #celticfc #spl #angepostecoglu