Maro Itoje in line to start against Ireland after England lose Launchbury

• Hamstring injury rules out Joe Launchbury from Ireland match• Mike Brown backs coach’s claim that England have no world-class playersMaro Itoje is in line for his first England start after Joe Launchbury was ruled out of the Six Nations game against Ireland with a hamstring injury.Itoje impressed when coming on for his debut against Italy earlier this month, replacing James Haskell at flanker, although he has played much of his fledgling career at second-row. Courtney Lawes has been called into Eddie Jones’s squad as a replacement for Launchbury but, given that he was not initially selected,…