Legendary Celtic boss Martin O'Neill believes Rangers badly let themselves down amid their disastrous Champions League campaign.
The Irishman was left unimpressed by the efforts of the Ibrox side in Group A as they became the worst team in tournament history after failing to pick up a point against Liverpool, Napoli or Ajax. Manager Gio van Bronckhorst has come under serious scrutiny amid his side's Euro woes coupled with several domestic stumbles. And O'Neill admits he expected better months after the Ibrox side's thrilling run to the Europa League.
The former Parkhead boss admits there's room for improvement for Celtic, however, he sees Ange Postecoglou 's side trending in an upward trajectory as they aim to secure a return reservation to European football's top table next season. Speaking on talkSPORT, the 70-year-old said: "Celtic, I will take an apologist's view, they played a lot of games, a lot of attacking moments in games. Against Real Madrid in the opening match had they scored first, which they could have easily done, who knows? It might have been different. Lots to learn about that one.
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