The team will also be without winger Yang Hyun-jun, who is competing in the Asian Games. O'Neill emphasized the importance of the St Johnstone match as Celtic aims to defend their title, prioritizing this game over the upcoming quarter-final against their city rivals.
Watch for Hogh and Tierney's potential impact on Celtic's attacking and defensive strategies against St Johnstone. Their return could shift the dynamics, especially with Duran's current form. The outcome may influence squad choices ahead of the crucial derby at Ibrox.