At the risk of making you all feel a little older, did you know that four members of the Manchester United squad who last won the Premier League title back in 2012/13 have had spells in management? Ryan Giggs took charge of Wales, Wayne Rooney has had spells at the helm of Derby County and Birmingham City in England’s second tier, Michael Carrick is doing a fine job at Middlesbrough, while Tom Cleverley in now the interim boss at Watford. Darren Fletcher and Phil Jones, meanwhile, are both working behind the scenes at Manchester United these days too. And, after celebrating his 40 birthday las…