Celtic were left stunned after the 2-1 Champions League defeat at Aalborg which sent them crashing out of Europe on Tuesday night.
Midfielder Barry Robson put the Hoops ahead in the 52nd minute but Caca drew his side level before Gary Caldwell put through his own goal as Celtic were denied even the consolation of a UEFA Cup place to look forward to in the new year.
Defender Mark Wilson said: "This is probably the lowest point of my career. It was unbelievable. I can't get my head around how we lost that game. We were stunned, absolutely stunned."
Raised mid-match expectations doubtless contributed to that reaction.
"When we scored it looked like we could have gone on and increased our lead," Wilson remembered
"We weren't under any pressure, so to lose two goals was hard to take.
"It was a deflection and an own goal which beat us. It was simply bad luck.
"Maybe we should have been strong enough to see the game out - but that might be over-critical.
"It does make it even worse that we are not even in the UEFA Cup. But we are still in a bit of shock at the moment."
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