Ryan Christie says Celtic weren’t street smart against Cluj, a 4-3 defeat means Celtic crash out of the champions league.
And Christie accepts that Celtic should have been capable of seeing off Romanian side Cluj.
He said: “You can’t really concede four goals at home in Champions League football and expect to go through.
“Going into the game after a 1-1 in the away leg, we need to be more street-smart, especially going up twice in the game and not managing to see it out.
“It’s a very bitter pill to swallow so early in the season. The guys are gutted. We are devastated.
“Not just because everyone wants to play Champions League football or thinks we deserve to be there, but, as I said, you can’t lose four goals at home and expect to go through.
“But going into the second half and going ahead twice, especially the second time with about 15 minutes to go, then you can’t really be losing the game 4-3.
“We had 11 players on the park that should be able to beat Cluj at home. It’s that simple.
“We’ve not done that, and for me I don’t think it’s anything to do with tactics or individual errors, it’s a collective.
“Over 90 minutes we weren’t good enough.
“To have such a devastating result so early in the season, it’s now really going to be a test of our character.”