Celtic midfielder Barry Robson claims the Hoops players need to be ''in the faces'' of their Manchester United opponents when the two clubs meet in their Champions League rematch at Parkhead on Wednesday night.
The Scottish champions lost 3-0 in the Group E game at Old Trafford last month but warmed up for the return match yesterday with a convincing 2-0 win over Hearts at Tynecastle to go back to the top of the Clydesdale Bank Premier League.
Robson was voted man of the match in a game Celtic won with surprising ease after Shaun Maloney's intelligent strike inside seven minutes, when he quickly returned a punched clearance from Hearts keeper Janos Balogh, gave the visitors the lead.
Celtic defender Gary Caldwell appeared to use his hand before scoring from close range in the 20th minute but there was no doubt the champions deserved to win against a disappointing Jambos side, who had defender Marius Zaliukas red-carded for a 'last-man' foul on Scott McDonald just after the break, although Paul Hartley sent the resultant spot-kick wide of the target.
Robson turned his attentions to the visit of the Champions League holders, who are hot favourites to complete the double over Gordon Strachan's side.
The Scotland midfielder knows United will offer a much stiffer test than the one presented to them in Gorgie but offered his own solution to the challenge.
''We know it's going to be a hard game against Manchester United,'' Robson said.
''They are a good side but we are a good side as well.
''We are at home and we want to put on a show for the fans and for ourselves.
''We have done it before against Manchester United, although they are a better side now than they were a few years ago.
''We need to make sure we do get in their faces when we come out the traps and try and use our ability to the best we can to cause an upset.''
The home fans did not take the defeat well and Hearts are to carry out an investigation after Strachan was involved in a corridor spat with one Jambos supporter after the game.
It is thought someone from corporate hospitality at Tynecastle verbally abused the Hoops boss as he came out from his post-match media briefing.
Hearts boss Csaba Laszlo, however, had no complaints about the result, admitting there was no way back after Caldwell's goal.
He said: ''We were two down in 20 minutes and the second goal was like a knife into us.
''When I saw it again, it showed that there was a hand used but I am not criticising the referee, it was hard for him to see it.
''I am always disappointed when we lose a game but I wish Celtic good luck for their game against Manchester United.''