Photo by Sebastian Frej/MB Media/Getty ImagesThings got much worse for Arsenal and Mikel Arteta on Saturday, following William Salibas performance out on loan.Arsenal kicked off the day by losing 5-0 to Manchester City.It was inevitable when you consider that Arteta used Rob Holding, Calum Chambers and Sead Kolasinac a left-back as part of a three-man central defence.After the game, Gunners fans were ripping into Arteta for loaning Saliba to Marseille and his performance last night underlines what a mistake it was.The 20-year-old powerhouse impressed in a big way as the Ligue 1 side beat Saint-Etienne 3-1.Theres something special happening at Celtic | Big Derby Preview with Ryan118Theres something special happening at Celtic | Big Derby Preview with Ryan118https://yt3.ggpht.com/ytc/AAUvwng3RIc-bAXurA5yt1Vj63uuVOBD1RQ9n6j_XKhD=s800-c-k-c0x00ffffff-no-rjIn 90 minutes, Saliba, who has now been loaned out twice by the 39-year-old Spanish coach, managed 115 touches and clocked a passing success of 96 percent, which is superb.The towering centre-back, who stands at 64, also managed six dribbles and won eight ground duels.It was the sort of display that made Arsenal shell out £27 million for him two years ago, during Unai Emerys spell as head coach.And heres how fans of the Emirates Stadium club reacted to his performance on Twitter:This content could not be loadedArteta disasterclass FC Arrey-Mbi (@brightarreymbi) August 28, 2021This content could not be loadedAbsolute cheat code of a player. melancholic (@kizitoofficial_) August 28, 2021This content could not be loaded6 dribbles as a cb , and I had arsenal fans telling me Ben Sprite is better on the ball. Forget best defender,Saliba is literally our best player at this point. Edu's Plastic Surgeon (@Lokomisonka) August 28, 2021This content could not be loadedThe way Saliba is literally better than the CB we paid £50M on is making my head hot again Afc things (@Gunner2Jasper) August 28, 2021This content could not be loadedSigh another talent ruined by Arteta ATAFC02 (@KafcTg) August 28, 2021This is Artetas most testing period since joining Arsenal as boss in December of 2019.And with the North Londoners rock bottom of the Premier League table after three games, failing to win at home to newly-promoted Norwich City after the international break may just be the final straw.They are playing like a relegated team and eventually itll get to a point where staying is seriously dangerous for the club.Photo by David Price/Arsenal FC via Getty ImagesIn other news, The information is: Journalist says Celtic could go for 24-year-old instead of Giakoumakis