Debenhams is expected to announce a short-term cash injection of about £40m as it buys more time to arrange a longer-term refinancing and store closure plan. The ailing department store chain, which has 165 outlets and employs 25,000 people, is battling to reach a deal with its banks and bondholders after a difficult Christmas capped off a lacklustre 2018, during which it issued three profit warnings. Lenders have agreed to extend the company’s overdraft limit in an attempt to give…