GettyRichard Mills'Gareth Southgate can't happen' - Man Utd urged to avoid appointing England boss as Erik ten Hag's successor by Gary NevilleGareth SouthgateManchester UnitedEnglandErik ten HagPremier LeagueEuropean ChampionshipTransfersGary Neville has urged Manchester United not to appoint England manager Gareth Southgate as a possible successor to under-fire Erik ten Hag.Article continues belowArticle continues belowArticle continues belowSouthgate tipped as possible successor to Ten HagNeville advises United against hiring England boss Believes the timing is not right for all parties Article continues below