Up until the weekend, the question was very much who would partner Virgil van Dijk at centre-back for Liverpool's first Premier League game away at Newcastle on Sunday. When it comes to attackers and attacking players that will be expected to play a key part this season, Liverpool have Alexander Isak, Florian Wirtz, Cody Gakpo, Victor Munoz and Rio Ngumoha, while Hugo Ekitike is currently sidelined.