By Jacob Leeks Conor Gallagher scored a 91st minute winner to see Chelsea steal a victory at Crystal Palace, though the Blues were unconvincing for much of Monday’s clash. Mauricio Pochettino’s men were ponderous in the first-half and fell behind to Jefferson Lerma’s wondergoal. The midfielder capitalised on an awful mistake from Noni Madueke and Moises Caicedo before firing a curling shot past Blues keeper Djordje Petrovic on the half-hour mark. But Chelsea were a different team in the second-half and quickly got back on level terms when Gallagher was left free in the box to smash home Malo G…