Now in League One and under the stewardship of Danny Wilson, the 2011–12 campaign saw Collins establish an effective defensive partnership with fellow centre-back Harry Maguire, and he was awarded supporters Player of the Month for September 2011. He scored his first goal for the "Blades" in February 2012, in a 1–0 victory over Yorkshire rivals Huddersfield Town at the Galpharm Stadium. Collins remained a mainstay of the defence but United missed out on automatic promotion by three points to city rivals Sheffield Wednesday, then lost to Huddersfield in the play-off final at Wembley Stadium; the match ended in a 0–0 draw, and though Collins converted his penalty his team lost the shoot-out 8–7.