By Tom Gott Ryan Gravenberch has revealed Liverpool manager Arne Slot has challenged him to establish himself as a deep-lying midfielder this season. A £34m signing from Bayern Munich last summer, Gravenberch is still seeking to cement a place in Liverpool’s starting lineup, having struggled for minutes alongside the likes of Alexis Mac Allister and Dominik Szoboszlai last season under former boss Jurgen Klopp. Slot, however, deployed Gravenberch at the base of his midfield during Liverpool’s 2-0 win over Ipswich Town on opening weekend and is keen to see the 22-year-old make the position his …