Some Chelsea fans have launched a scathing attack on Blues midfielder Conor Gallagher following his underwhelming performance against West Ham United.Chelsea bounced back from their defeat to Southampton during the week with a victory over West Ham today (September 3). They had to dig deep, but managed to beat the Irons 2-1 nevertheless.West Ham handed the Blues a major blow when Michail Antonio opened the scoring around the one-hour mark. However, Ben Chilwell, who came on as a substitute following the Hammers' opener, brought the game back to square one in the 76th minute.Maxwel Cornet had the chance to give David Moyes' side the lead again ten minutes later, but he was denied by the woodwork. The Irons were left to rue the missed opportunity as Kai Havertz went on to score at the other end of the pitch.Cornet immediately found the back of the net for West Ham, but celebrations were cut-short. The goal was disallowed after the referee deemed that Jarrod Bowen had fouled Chelsea goalkeeper Edouard Mendy in the process.Thomas Tuchel's side thus went on to clinch a narrow 2-1 win against their London rivals. The victory has also seen them climb to fifth place in the Premier League table with 10 points.Chelsea fans, though, were not pleased with everything they witnessed at Stamford Bridge. They were particularly unimpressed with Gallagher's performance on the evening.The 22-year-old returned to the Blues' starting XI after sitting out against Southampton due to suspension. Some were not unhappy with Tuchel's decision to start him in the first place, while his display only frustrated them further.Here are the best tweets about Gallagher's performance against West Ham:Angie@angie_cfcI would get ziyech in Gallagher role because what is this golden retriever onto…,14815I would get ziyech in Gallagher role because what is this golden retriever onto…,CE ✍️@CatenaccioEraGallagher is like that kid that’s shit at sports but drinks 3 Red Bulls before PE class16725Gallagher is like that kid that’s shit at sports but drinks 3 Red Bulls before PE classBCT 🇳🇬@badcfctakesWhy the fuck is he playing Gallagher in midfield again, does he have a fetish for watching his team lose the ball?866Why the fuck is he playing Gallagher in midfield again, does he have a fetish for watching his team lose the ball?R@BeIgiannnI genuinely think you could teach a Jack Russell to do what Gallagher does on a football pitch lmao. Have we ever seen a player in PL history that lacks this badly in every department of football ?121I genuinely think you could teach a Jack Russell to do what Gallagher does on a football pitch lmao. Have we ever seen a player in PL history that lacks this badly in every department of football ?D🔱@DZKurtisssGallagher isn’t a footballer, he’s not serious71Gallagher isn’t a footballer, he’s not seriousCM@CFCJorgConnor Gallagher is just playing player career mode and put himself in the chelsea squad.4Connor Gallagher is just playing player career mode and put himself in the chelsea squad.Dami ⭐⭐@TheChelseaWayGallagher ain't it man. ‍1Gallagher ain't it man. 😮‍💨Gallagher has made five Premier League appearances for Chelsea this season. His previous start for the side came in their 2-1 win against Leicester City, but he was sent off just 28 minutes into the game.It is worth noting that the midfielder was replaced by Armando Broja just before Antonio's goal.Chelsea midfielder Gallagher impressed for Crystal Palace last termGallagher spent the 2021-22 season on loan at Premier League club Crystal Palace. The 22-year-old impressed under Patrick Vieira, establishing himself as a key player at Selhurst Park.The midfielder made 39 appearances across all competitions for the Eagles last term. He found the back of the net eight times and provided five assists for his teammates in those matches.Gallagher's performances for Crystal Palace have earned him a place in Tuchel's plans for the season. However, Blues fans have not been impressed with what they have seen of him so far.