Celtic's recent European result against Atletico Madrid still stings nearly 48 hours later.

Indeed, the 6-0 thrashing at the hands of Diego Simeone's side has knocked the stuffing out of everyone connected to the club, it would seem. Fighting a losing battle thanks to losing an early goal by the hands (or feet) of Antoine Griezmann, the task would be made even more difficult following the sending-off of Daizen Maeda for Brendan Rodgers' men.

One of the players involved in Tuesday night's proceedings was Canada right-back Alistair Johnston, who did not hold back on his disappointment at how Tuesday night transpired. Speaking after the game, Johnston was honest about the night's events. He said: "It was the toughest defeat in my time at Celtic, for sure.

"It was frustrating, difficult, because you it feels like you can’t get the ball, you can’t get in their half and it’s wave after wave. That is something we were so disappointed with. Even going down to 10 men, we should not have conceded that much territory and chances. We need to look at ourselves in the mirror, individually and collectively and figure out what we want to do – because that was unacceptable.

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"We know we have to be perfect – or near perfect – to get a result against these teams. Of course, if you go down to 10 you are really putting yourself behind the eight ball. Unfortunately, it wasn’t the first time we’ve done that in this campaign. We’ve made it difficult for ourselves. But we played with nine men at Feyenoord for 25 minutes and looked more solid. It was a longer period in Madrid but we made it too easy. We were too passive. That was the frustrating part. We could have shown more with 10 men. Of course, you might not score three and turn it around, but we could have dug our heels in a bit more.”

Thankfully for Johnston and his teammates, Celtic have a game at the weekend to try and make things right, at least domestically. Their opponents Aberdeen play in Greece tonight against PAOK, before making the trip to Celtic Park to play the champions.

Will Celtic return to winning ways against Barry Robson's side? Ryan McGinlay and Alan Morrison discuss this and much more in Thursday's morning briefing - available below.