Keeping concentration was the biggest challenge for Gillingham goalkeeper Jake Turner on a quiet night for him at Priestfield. Turner watched Sutton striker Harry Smith head wide and made routine claims to deal with a first-half header off Ben Goodliffe and a tame shot from Omari Patrick late on. It was his opposite number Dean Bouzanis who had it all to do at the other end. More: Gillingham 1 Sutton 0 “The lads were excellent and I didn’t have loads to do,” said the 24-year-old keeper, after claiming his 11th shutout of the season. “Those games can sometimes be difficult for myself, and the b…