Ange Postecoglou: The challenge is to use defeat to fuel our ambitions in the league

After 120 minutes at Hampden Park, when the whistle blew for the final time, it confirmed Celtic’s first domestic defeat in 33 games. It was a tense and tight contest at Hampden Park, one that ebbed and flowed as the Celts dreams of lifting a 41st Scottish Cup ended at the semi-final stage...