By Toby Cudworth Arne Slot was keen to focus on the positives of Liverpool falling to a narrow 1-0 defeat to Preston North End in a pre-season friendly. Mohamed Salah and Dominik Szoboszlai were among the players to start the game, played at Liverpool’s AXA Training Centre, before a raft of changes were made at half-time to blood young academy prospects. Robbie Brady’s goal was enough to earn Preston the win but Slot was happy enough that his players had come through the exercise unscathed. The Dutchman was also pleased with some the control shown by Liverpool’s players throughout the game, ad…