Liam Gallager’s performance at Wembley on Saturday night before Anthony Joshua’s fight with Daniel Dubois has been blasted by fans online. The 52-year-old opened with Rock N’ Roll Star prior to the main event following the announcement he’d be reuniting with Noel Gallagher for an Oasis tour next year. But some users weren’t impressed on X, with fans criticising Gallagher’s vocals. “Ticket prices going down rapid after that Liam Gallagher performance,” said one user. A second said: “OMG F*****G DREADFUL”. A third opined: “Few refunds knocking about listening to that.” Another wrote: “That was d…