Johnny Sexton returns to Ireland’s starting side against Australia

• Joe Schmidt has made eight changes after last week’s loss• ‘Sexton is a maestro,’ says Wallabies coach, Michael CheikaThe selection of Johnny Sexton by the British & Irish Lions for the second Test against New Zealand last year marked a turning point in the series and Ireland are looking for the fly‑half to make a similar impact against Australia in Melbourne after the 18-9 defeat last Saturday.Sexton is one of eight changes made by the Ireland head coach, Joe Schmidt, from the Brisbane match. Most of the players called up are, like Sexton, from Leinster, who had a hectic end t…