Celtic threw away a four-goal lead in Austria as they missed out on the Champions League for the second year running. The Scottish champions looked to be cruising into the league stage when Callum McGregor put them 4-0 up on aggregate against Lask with a 21st-minute deflected strike. However, they went on to endure one of their all-time European lows with a 5-1 defeat in Linz delivering a £20million-plus blow.