By Graham Thomas & Darren Wells Premier League clubs wanting to hire Kieran McKenna as their next manager may have to be patient – after forming an orderly queue. Crystal Palace, West Ham and Brentford are among those who have eyes on Ipswich Town’s personable young manager. Why wouldn’t they? The 37-year-old gained his second away victory in four days to keep the Tractor Boys revving hard for automatic promotion. The Northern Irishman is averaging an impressive two points per game at Ipswich. But as Palace are finding, all admirers may have to wait until the summer after McKenna insisted: “I …