Neil Lennon is disregarding Celtic's recent home drubbing of St Johnstone in the Scottish Communities League Cup ahead of tomorrow's meeting in the Clydesdale Bank Premier League.
The Parkhead side thrashed Steve Lomas' men 5-0 earlier in the month to set up a semi-final appearance against St Mirren at Hampden in January.
However, the former Celtic skipper, still basking in the glory of his side's 2-1 Champions League home win over Barcelona in midweek, remembers that Saints caused an upset when they beat the Hoops at McDiarmid Park in the SPL in September.
Asked about the recent result against St Johnstone with regards the impact it might make on proceedings at Parkhead tomorrow, Lennon replied: "It will be irrelevant.
"I'm sure Steve will have them well motivated, as we were to beat them as they had turned us over at McDiarmid Park and we will be using that result in Perth as a motivation again on Sunday.
"But we have to adapt ourselves. I want the players to enjoy the aftermath (of the Barcelona result) but it is back to St Johnstone.
"We will try to carry on and play the good football that we have been playing.
"The SPL is our priority because it is the avenue that gets us into the Champions League in the first place."
