Sam Allardyce is the first man to manage both north-east rivals Sunderland and Newcastle United but is hoping his time at the Stadium of Light is far more successful than at St James’ Park. Allardyce was at Newcastle for eight months and 21 league matches from May 2007 until being sacked in January 2008 but the 60-year-old’s arrival at Sunderland has not created the backlash from fans that would have occurred if he was a Geordie…