Liverpool supporters are busy picking the bones out of another pre-season friendly after seeing their side beat Arsenal on Thursday morning. The Reds made it two wins out of two under Arne Slot having rose to the challenge posed by the Premier League runners-up. After watching the Slot era get underway with a win over Real Betis on Saturday, there were lots of new tactical ideas to chew over. Those were on display again in Philadelphia, with Diogo Jota helping Liverpool to look a little more like a conventionally set-up football team. One of the most interesting aspects of Thursday’s game, tho…