 Complete the following phrase:  He made just one league appearance in the early part of the 201011 season, partly due to a recurrence of the back injury. Stack regained his place in the Hibs team in February 2011, as new manager Colin Calderwood decided to give opportunities to each of his goalkeepers under a rotation policy. Soon afterwards, however, Stack suffered a shoulder injury that required surgery. Despite that setback, Stack agreed a new one-year contract with Hibs during May 2011. Stack played regularly during the 201112 season, but suffered a thigh injury during the Scottish Cup semi-final that caused him to miss the last five league games and the 