Liverpool players have been working hard in pre-season to prepare for the new campaign. The Reds are still at a very limited capacity with many of their biggest stars still enjoying time off or playing for their national teams. But with Arne Slot now having more than a week to establish his methods, the members of the Liverpool squad who are already back will be getting ever more familiar with the new boss. Slot was given a boost this week with Mohamed Salah and Wataru Endo returning to the camp. Salah and Endo are the most senior members of the team now in training. Having Salah around in par…