Martin O'Neill stood exposed in the open air of the Raiffeisen Arena, with no refuge from a result that will haunt Celtic for years to come. The Scottish champions suffered one of the most chastening nights in their European history on Tuesday, crashing out of the UEFA Champions League play-offs despite holding a four-goal aggregate lead against LASK.

A catastrophic second-half collapse saw Celtic concede five goals in the tie, surrendering a position of total control to lose 5-4 on aggregate. It is a defeat made all the more painful given that Celtic were eliminated at the same stage last season — beaten on penalties by Kairat Almaty.

O'Neill steps forward

The Celtic manager did not deflect blame when faced with questions at full-time.