Arteta left his role as Guardiola’s assistant coach just over a year ago to take the top job at Arsenal, and led the club to FA Cup glory to end the 2019/20 season on a high.
Arsenal also went on to win the Community Shield, but the new campaign has largely been disastrous for Arteta.
Arsenal have lost eight of their opening 14 League games to sit just five points above the drop zone before Christmas, and pressure is mounting on Arteta with problems in defence, midfield, attack – and even in goal.
Following City’s drubbing of a patchwork Arsenal side in north London, Guardiola believes the Gunners must give Arteta time to “create something” at the club – and pointed to the trophies he has already won as evidence of what the 38-year-old can bring.
When asked about Arteta’s future, Guardiola told BBC Radio 5 Live: “They will do a huge, big mistake.
“I’m pretty sure they are going to trust him. I understand for the analysts, analyse the results.
“But I was with him many years and I know his incredible quality as a human being and especially as a manager, how he is involved in everything. It’s just a question of time and he will do well.
“I’m not on the board. For me they will do a big mistake if they are thinking.
“They give him the confidence, they won two titles when for a long time ago it didn’t happen at this club.
“In this pandemic situation, with injury problems they have and the games they played always they played good.
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“But unfortunately these games is our job and it depends on the results. But football changes in one week so quick.
“I can speak about my experience alongside him, one of the most incredible successful teams in English history we had and he was part of this success and it would not be possible without him, and to create something like this you need time like I had in my first season.”
Additional reporting by PA.