(Reuters) - Metro Bank Finance Director David MacLean had stepped down to take on a new role, the troubled British lender said in a statement."We can confirm that David MacLean is leaving Metro Bank to take up a new role. We wish him every success," a spokeswoman said in an email. MacLean, who reports to Metro's CFO David Arden, is being lined up as British digital bank Revolut's new finance chief, Sky News reported. Revolut did not immediately respond to a Reuters request for comment on the..