Celtic trained in the Pepsi Arena on Tuesday in preparation for Wednesday night's Champions League qualifier against Legia Warsaw, kick-off 7.45pm.
Ronny Deila's side thrashed KR Reykjavik 5-0 on aggregate in round two while Henning Berg's men thumped St Patrick's Athletic 5-0 in Dublin after being held 1-1 in Poland.
The second leg takes place at Murrayfield next week and Deila is confident his side can book their place in the play-offs.
He said: "Legia are a good team and it is a huge step up compared to Reykjavik. It is going to be two fantastic games but we are improving all the time.
"The tempo in the training and matches has gone up so we are getting fitter and we know each other better. I know we are going to put in a good performance tonight and I am comfortable that we can be good enough to beat Legia."
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