Liverpool’s transfer window is still yet to take shape as they wait for their big stars to return. The Reds have already begun their pre-season preparations as they gear up for a first campaign without Jurgen Klopp for almost a decade. Mohamed Salah and Wataru Endo are set to return to the AXA Training Centre on Wednesday as Arne Slot ramps up his work. However, with a number of other big players in the Liverpool squad still away on international duty and on holiday, it will still be a while before the full group is back. Worryingly, the latest transfer rumours suggest that there is a key play…