"In the Premier League there are a huge amount of games and everybody will be involved". Many are tipping Liverpool to be their closest challengers this season, after a a £123.6m spending spree this summer.
The pair were asked to pick their Premier League predictions ahead of the new season.
The Premier League transfer market curtain is set to drop on Thursday, while English teams seek to finalise as many as 40 deals.
"Liverpool are strong", Walker said.
"We need to drive each other on".
The arrival of November is marked by another cracking double header, as Bournemouth v Manchester United (Saturday, November 3rd, 12.30pm) provides a fascinating aperitif to the Arsenal v Liverpool showdown.More news: MoviePass will now allow just 3 movies a month
But while City begin the campaign as firm favourites after their record-breaking title campaign last season, they will be well aware of the threat posed by Juergen Klopp's improving Liverpool and the rest of the big six. But still, we believe we can do better and dominate more.
City have been quiet in the transfer market, adding just Riyad Mahrez from Leicester, but their attacking potency and ability to dominate possession should be even stronger with the addition of the Algerian.
They could yet be joined by Celtic, who are aiming to qualify for the UEFA Champions League group stage, plus Burnley, Rangers, Hibernian and Welsh minnows TNS, who are still alive in the UEFA Europa League qualifying rounds at the time of writing.
"He will play exactly the same way and they are going to be very hard to stop, although I think Liverpool and United will both be a lot closer to them this time".