Celtic CL post-mortem: What went wrong and where do they go from here?

Celtic have spent the last couple of years making Champions League qualification look like a problem they simply cannot solve. But even by their recent standards, this was a collapse of remarkable proportions.

Four goals ahead with less than an hour still to play across the tie, Celtic somehow found themselves on the wrong end of a 5-4 aggregate defeat to LASK. A place in the league phase was theirs to lose - and they lost it spectacularly, with individual mistakes, questionable decisions and a team that appeared to run out of answers when the pressure mounted.