Hibernian will take on Brendan Rodgers’s side away from home at Celtic Park in the Scottish Premiership on Saturday afternoon.
Celtic midfielders Brown and Armstrong will miss the game against His due to injuries, as confirmed by manager Rodgers to BBC Sport.
Former Hibernian forward McManus, 36, has said that the injuries to the two Celtic players is huge boost for Neil Lennon’s side.
The Celtic Park faithful, though, will not be pleased with the injuries to Brown and Armstrong.
The 32-year-old and the 25-year-old are important players for the Hoops and have been playing well this season.
Celtic, though, do have a very good team, and they should be able to pick up all three points from the encounter against Hibernian on Saturday afternoon, especially as the Scottish Premiership match is at Celtic Park.