Liverpool and Manchester City are locked in a tight battle for the Premier League title, with the Citizens only leading the league with a one-point advantage.
Both teams played out a 2-2 draw when they locked horns earlier this season at Anfield and are now set to face each other again on Sunday at the Etihad Stadium with all to play for.
Manchester City defender Walker has admitted that he and his fellow defenders will need to have 100 per cent concentration on the pitch throughout the 90 minutes in Sunday’s clash, given the quality Liverpool have in their attacking arsenal.
Walker stressed that his side cannot switch off for one second as a wrong move could result in the game being over when playing against a side like Liverpool with the title on the line.
Asked how mentally draining is it to play against Liverpool’s attackers, Walker told the Daily Telegraph: “It’s about concentration
“It’s the mental side or a moment of genius that will probably separate the two teams.
“The concentration has to be 100 per cent for 90 minutes plus injury time.
“You can’t switch off for one second.
“One second of concentration lapse from a defender will result, nine times out of 10, in a goal given the players Liverpool have got.
“It’s a game of chess.
“Who is going to make the wrong move first?
“One wrong move and it’s kind of game done.”
Liverpool are currently riding a ten-game winning streak in the top flight and will be determined to make it eleven with a win over the Citizens, who have dropped points on three occasions in the same stretch of games.