Howe is one of the bookmakers’ favourites to succeed Gareth Southgate, who announced he was standing down after almost eight years as national team boss on Tuesday morning.However, Newcastle chief executive Darren Eales is determined to hold on to Howe, after confirming the 46-year-old had agreed a multi-year contract extension last summer.Eales insisted everything was “hypothetical” at this stage, but asked if the Magpies would fight to keep Howe in the event of an approach from the Football Association, Eales said: “Yes, absolutely.”We’re on an exciting journey and, as far as we’re…