Celtic manager Brendan Rodgers is looking forward to the challenge of taking on AEK Athens in the Greek capital's Olympic Stadium on Tuesday.
A Champions League play-off round place is at stake but Celtic's hopes are hanging by a thread after they were held to a 1-1 draw in last week's first leg in Glasgow.
Rodgers is backing his players to come through a tough test with flying colours and believes there is enough quality in his squad to cause a shock in Athens.
He said: "You're coming away to face a good team in a game that's in the balance but that's sometimes how it is. You're never always going to have it your own way but there have been enough times in the last couple of years where we have shown that ability to dig deep.
"We have shown that spirit in the squad and also the quality. We know it will be tested but this is a great opportunity for us to show that again.
"No doubt, this is the biggest challenge but it is something we relish, something that we have always done. Our job is to always find a solution and we're excited about the challenge. I just see it as a great opportunity."
Celtic are 19/20 to qualify for the next round and 6/1 to seal a 1-0 victory against AEK Athens. Scott Sinclair is 15/2 to be the first goalscorer in Tuesday's match.
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