Tony Mowbray is hoping Robbie Keane's home debut against Hearts on Wednesday night will inspire the Hoops in their title chase of Clydesdale Bank Premier League leaders Rangers.
Keane, on loan from Spurs until the end of the season, came off the bench at the interval against Dunfermline at East End Park to help the Glasgow giants book their place in the quarter-finals of the Active Nation Scottish Cup with a 4-2 win.
Celtic now turn their attention back to the league where they remain 10 points behind their Old Firm rivals and the Parkhead boss is hoping for a big crowd on Wednesday night to see Keane.
"I hope Robbie is fired up for Wednesday, that's why he only played 45 minutes," Mowbray said. "He was always going to be playing 90 minutes on Wednesday, or at least starting the game.
"I spoke to Robbie during the week (after the Kilmarnock game). Three 90 minutes in seven days for the boy is probably asking for trouble, injury-wise and I think he agreed.
"But I am delighted Robbie is here because he adds that finesse in the final third that sometimes makes that difference in games."