Gillingham players get a welcome breather today after a full-on return to training. Manager Mark Bonner admitted his players were feeling it on Saturday in their first pre-season outing after two intense weeks of work. The Gills were in action against Championship Millwall and played out a goalless draw, with 22 players in action, all getting 45 minutes. There’s another Championship side heading to Priestfield this Saturday when Watford pay a visit but Bonner says the workload won’t have been so intense this time around. “The boys were knackered after 45 minutes,” admitted the manager. “That’s…