Brendan Rodgers is warning his Celtic players they need to be at "100 per cent" to take something from their Champions League clash with Lazio.
They host the Italian side in their first home Group E match on Wednesday night looking to bounce back from their 2-0 defeat away to Feyenoord last time out.
It is a sell-out at Celtic Park for the match and Rodgers wants his players to use the atmosphere to inspire them to victory.
"To come here and play this game is always special and it's getting that emotion from the support that rolls down off the stands onto the pitch and that's what we have to use," he said.
"From the first whistle, we go straight into fifth gear and look to give everything to the game and perform.
"We know that at this level we have to be 100 per cent. At 98 per cent at this level, you'll come unstuck.
"We'll have to give everything and we will do in terms of spirit. It's where this team is at in what they're developing, I see a mental strength in this team that is growing all the time."
