[3] He transferred to Grimsby Town in March 1972 where he first became acquainted with manager Lawrie McMenemy.

[3] He was the first choice keeper for the next few seasons, and in May 1976 was part of the Southampton team who beat Manchester United 1–0 in the FA Cup final.

[4] Manchester United started stronger, and missed several early goalscoring opportunities, with Turner making a series of impressive saves to deny Gerry Daly and Gordon Hill.

[5][6] He was a brave and reliable keeper, but at the start of the 1976–77 season he injured his left knee and required an operation to remove both cartilages.

[8][9][10] He started the following season as first-choice keeper, but after eight games he lost his place to Peter Wells in October 1977.