Despite Liverpool picking up three points at Bramall Lane tonight, Virgil van Dijk was not always a happy figure throughout the game. Van Dijk ultimately won the match for Jurgen Klopp’s team, who produced a rather indifferent performance at times. And quickly after the half-time restart, the centre-back felt necessary to remind Trent Alexander-Arnold of his effort levels. Trent was in his more familiar right-back position at the time and was beaten far too easily on the wing, leading to a dangerous crossing opportunity. And once the ball has gone into touch, Van Dijk could be seen bellowing a…