The Glasgow giants will face Kilmarnock at Celtic Park in the Scottish Premiership on Saturday afternoon.
Former Celtic striker Walker believes that the Hoops will pick up all three points from the encounter.
While predicting Brendan Rodgers’s side to win 3-0, Walker named 21-year-old Celtic midfielder Ryan Christie as the key player.
“When Brendan Rodgers looks to his subs bench, Ryan Christie is someone who can make an immediate impact,” Walker wrote on Skysports.com. “His pass for James Forrest's goal against Alloa Athletic was magnificent.”
Celtic are at the top of the Scottish Premiership table at the moment with 13 points from five matches.
The Bhoys are three points clear with a game in hand and are firm favourites to win the title yet again.
The Hoops will head into the match against Kilmarnock on the back of a 2-0 victory over Alloa Athletic at Celtic Park in the quarter-finals of the Scottish League Cup.
Kilmarnock are ninth in the Scottish Premiership table at the moment, having been able to pick up just six points from their six matches so far this season.
Lee Clark’s side will head into the match against Celtic on the back of a 2-2 draw with Partick Thistle at home in the Scottish Premiership.