Ryan Gravenberch has not been in the best form for Liverpool recently. The 21-year-old has generally had a positive time of things since signing from Bayern Munich over the summer. But over the past couple of months, Gravenberch’s performances have deteriorated. Last week at Arsenal was perhaps the low point of that run. Jurgen Klopp was spotted going berserk at the Dutchman after Bukayo Saka had put the Gunners into the lead. That led to Gravenberch starting today’s game against Burnley on the bench. Still, the No.38 usually comes on even if he’s not in the line up. That didn’t happen today. …