Neil Lennon has warned St Johnstone that his Celtic players will be on a revenge mission when the two sides meet in the quarter-final of the Scottish Communities League Cup on Tuesday night.
The Hoops boss is still unhappy about their defeat at the hands of Saints in the Clydesdale Bank Premier League at McDiarmid Park last month.
Celtic also head into the cup tie on the back of a poor 2-0 loss to Kilmarnock at the weekend and Lennon has made it clear he wants payback for both of those results.
He said: "There will be a bit of revenge in the air. I'm sure the players will be very motivated. I'm looking for a really good reaction and I'm sure I'll get that.
"I'm not going to give my team away but it's fair to say it will be a pretty strong team. It's a quarter-final, off the back of a disappointing performance and result, and it's important we bounce back in the right way.
"They know how important the shirt is, they know how important it is to play for the club. They didn't do themselves justice on Saturday and it's not often I can cast that aspersion on the players. That's gone and we move on."
Lennon refused to use their exertions against Barcelona in the midweek Champions League clash at the Nou Camp as an excuse for the defeat to Killie - the Ayrshire side's first victory at Parkhead in 57 years.
He said: "That's an easy way out. Our priority is the league.
"We had quite a proud home record for over a year, which is gone now, so we've got to start that all over again. Domestically, we want to put as much distance between ourselves and everyone else as possible, as quickly as possible.
"Our play in general was insipid for us, there was no snap to our play, our passing was poor and that was uncharacteristic of the way we have played. We had a bad day and I'll make sure that doesn't happen again."