Rangers completed the first signing of the Philippe Clement era on December 28th, Fabio Silva joining on loan from Wolverhampton Wanderers three days before the January window actually opened. Five months on, the Scottish Premiership challengers are once again bursting out of the blocks, operating with one eye on the summer market while there are still two trophies to be fought for. Rangers are expected to target reinforcements in a number of different areas this summer. A back-up goalkeeper may be required. There will be gaps to fill at left-back and in central midfield if Borna Barisic, Ryan…