It was a testing period for City's assistant manager, who will be in charge of the team against Lyon tonight as Pep Guardiola is serving a one-game touchline ban for abusing the referee during the second leg of their Champions League defeat by Liverpool last season.
Sane soon inspired City to get one back, pulling a pass back for Silva to guide home, but it was not enough and Lyon claimed the points.
Arteta's presence, however, failed to inspire the highly-talented Man City side as Lyon's two first-half goals condemned them to a defeat.
"The decision was made and I am so happy the decision was made", he said (via The Mirror). We will try to reduce the impact and give the players what they need and hopefully it will work well.
"We were ready for the game, keen to start Champions League because the way we ended it last season really hurt".
Maxwel Cornet and Nabil Fekir gave the Ligue 1 side a two-goal lead at the break and although Bernardo Silva halved the deficit, City could not find an equaliser in the closing stages. "I can't tell you what would happen if he was here", the Spaniard told reporters. "It was different. The first half was very poor from us and you have to forget it".
With Group F rivals Shakhtar Donetsk and Hoffenheim drawing 2-2 in Ukraine earlier on Wednesday, City are bottom of the group. People think we are candidates to compete against other teams in Europe.
Arteta would not be drawn on whether Guardiola's absence from the touchline had any influence on an unusually disappointing performance by the champions of England.
City were dominating possession ten minutes into the second stanza but they were yet to make unsafe attacks.
For the reigning Premier League champions, however, it seems like they might have been lacking the fan support they would have wanted.