Instagram post from director Andrés Muschietti.As TheWrap first exclusively reported, Keaton was in talks to return to the role of Batman after nearly 30 years, to appear alongside Ezra Miller in Warner Bros.’ “The Flash.”Also Read: Ben Affleck to Return as Bruce Wayne in Ezra Miller's 'The Flash' MovieBut Keaton set the fandom on fire last month when he hinted in an interview with Deadline that he might not do “The Flash” because of his concerns about COVID-19.“To be honest with you, you know