Rangers fans will be hoping there is a pivotal shift in momentum this weekend amid the race for the Scottish Premiership title. Quite frankly, the Light Blues require Celtic to slip up and there’s every chance of that happening when they play Hearts at Tynecastle on Saturday. Rangers then face Kilmarnock on Sunday and the best scenario heading into next weekend’s massive Old Firm clash would be having both sides locked on 81 points each with three games left. But regardless of what happens in Gorgie, Rangers need to focus on gaining three points against Derek McInnes’ Killie side who are looki…