Arsenal fans reacted after Pierre-Emerick Aubameyang's match-winning performance in Barcelona's 4-0 win over Real Madrid in El Clasico on Sunday.The Gabonese forward was allowed to leave the Emirates on a free transfer in January after manager Mikel Arteta froze him from the first team. Arteta also stripped him of the club's captaincy, citing disciplinary breaches.However, Aubameyang has found a new home at Camp Nou and has made a rousing start to life there. He has scored nine goals in 11 appearances across competitions since signing for the Catalans.The 32-year-old forward opened the scoring in the 29th minute against Los Blancos on Sunday, heading home an Ousmane Dembele cross. The forward then provided a back-heeled assist for Ferran Torres to score in the second half. Aubameyang scored the Blaugrana's fourth goal, calming chipping Real Madrid goalkeeper Thibaut Courtois in the 51st minute.Arsenal fans on Twitter were impressed by Aubameyang's performance in El Clasico. Some even questioned Arteta's decision to give up on the Gabonese midway through an important season.Here are some tweets in that regard:Re Chris@ReChris1@GoonerGirl1969 Truth is, we support Auba over Arteta, not Arsenal. I hardly tweet about City, Chelsea, Liverpool, ManU and the rest. That’s because I love Arsenal and don’t like the way Aubameyang was treated by Arteta. Some fans tried to demonize him. That’s not fair. He attracted my sympathy4:41 AM · Mar 21, 20227@GoonerGirl1969 Truth is, we support Auba over Arteta, not Arsenal. I hardly tweet about City, Chelsea, Liverpool, ManU and the rest. That’s because I love Arsenal and don’t like the way Aubameyang was treated by Arteta. Some fans tried to demonize him. That’s not fair. He attracted my sympathySakanell!@SakkanelAubameyang will keep banging in goals for Barcelona to return them to the top.Meanwhile, Arsenal fans will keep crying about their lack of a clinical striker ,which will keep costing them.6:42 AM · Mar 21, 2022Aubameyang will keep banging in goals for Barcelona to return them to the top.Meanwhile, Arsenal fans will keep crying about their lack of a clinical striker ,which will keep costing them.The Arsenal@KYEkye45I know I would rather Aubameyang upfront than Lacazette #AFC6:56 AM · Mar 21, 2022I know I would rather Aubameyang upfront than Lacazette #AFCㅤ@KingFeezleSo who’s Aubameyang dragging? Arsenal or Arteta.6:32 AM · Mar 21, 2022So who’s Aubameyang dragging? Arsenal or Arteta.Adeyimika Koya.@webemeraldDon't mind that Cretin. Arsenal are winning. Aubameyang is winning. Let's be happy for both parties. #AVLARS #Arsenal6:23 AM · Mar 21, 2022Don't mind that Cretin. Arsenal are winning. Aubameyang is winning. Let's be happy for both parties. #AVLARS #ArsenalPiers Morgan@piersmorganUPDATE: Aubameyang scores again in El Clasico. Two goals & one assist so far, and it’s still only the 53rd minute. You watching @m8arteta ???2:43 AM · Mar 21, 20223177347UPDATE: Aubameyang scores again in El Clasico. Two goals & one assist so far, and it’s still only the 53rd minute. You watching @m8arteta ???#KROENKEOUT@INVINCEARSENALAubameyang did very well for Arsenal for first 3 years and helped us win FA cup then his performance dipped so, it was the right decision to let him go. My only problem was not getting a proper replacement.5:58 AM · Mar 21, 2022Aubameyang did very well for Arsenal for first 3 years and helped us win FA cup then his performance dipped so, it was the right decision to let him go. My only problem was not getting a proper replacement.S.N.I.@Sammie_N_IKDid Aubameyang down tools at Arsenal, or Arteta was the problem?5:34 AM · Mar 21, 2022Did Aubameyang down tools at Arsenal, or Arteta was the problem?Zaiyyd Muhammad@NorthZazinoSee who Arsenal let go for free Auba. Some many useless Managers are managing football clubs lately.#ELCLASSICO4:09 AM · Mar 21, 20224See who Arsenal let go for free Auba. Some many useless Managers are managing football clubs lately.#ELCLASSICO https://t.co/RB0kT3mg39KELEWELE JOINT 🍟@ANKAMAGYIMI__Watching the highlights of the El Classico and boy, see the clear cut chances Aubameyang and Ferran Torres had.Man seldomly got these kind of chances this season at Arsenal and Lacazette is facing same issue now5:10 AM · Mar 21, 20225913Watching the highlights of the El Classico and boy, see the clear cut chances Aubameyang and Ferran Torres had.Man seldomly got these kind of chances this season at Arsenal and Lacazette is facing same issue nowPrincess Gooner 🇺🇦@GoonerGirl1969What is it with these Auba fan boys? Move on & if you can't, go support Barca.I'm honestly shocked at the fandom. He was great at the begining not great at the end, move on. It's like they support Auba over supporting Arsenal, I just don't get it or am I missing something?3:25 AM · Mar 21, 202276165What is it with these Auba fan boys? Move on & if you can't, go support Barca.I'm honestly shocked at the fandom. He was great at the begining not great at the end, move on. It's like they support Auba over supporting Arsenal, I just don't get it or am I missing something?Pierre-Emerick Aubameyang was considered an Arsenal talisman during the early stages of Arteta's tenure. The forward was instrumental in guiding the Gunners to their FA Cup triumph and Community Shield win in 2020. However, it's worth mentioning that Arsenal have done well in the Premier League despite Aubameyang's departure. They are fourth in the standings, having picked up 54 points from 28 matches, winning six of their last seven Premier League games. The Gunners are three points clear of fifth-placed Tottenham Hotspur and have a game in hand.How has Pierre-Emerick Aubameyang performed for Barcelona since his move from Arsenal?Pierre-Emerick Aubameyang has assumed the central striking position at Barcelona since his January transfer from Arsenal. He has scored seven goals and provided an assist in his last five La Liga games for the club.The Gabonese forward also scored his first hat-trick for his new club against Valencia in February in a 4-1 La Liga win. Aubameyang also netted the winning goal in a 2-1 win over Turkish giants Galatasaray in the second leg of their UEFA Europa League Round of 16 tie.FC Barcelona@FCBarcelona"This is the beginning of the new era" — @Auba after Barça's 4-0 win in #ElClásico9:01 AM · Mar 21, 20223176227"This is the beginning of the new era" — @Auba after Barça's 4-0 win in #ElClásico https://t.co/U2u1u8ykWgBarcelona have turned a new leaf under new manager Xavi and are currently on a 13-game unbeaten run in La Liga following their emphatic win over Real Madrid. They have won their last five league matches on the trot. They are third in the league standings, having accumulated 54 points from 28 games, trailing league leaders Madrid by 12 points and have a game in hand.