Florian Wirtz’s patchy debut season at Liverpool was dealt another hurdle on Saturday by his surprise omission against Chelsea, which was reportedly due to illness. The record-breaking summer recruit endured an understandably slow adaptation to English soccer—although not many would have predicted his wait for a first goal to stretch past Christmas Day—before striking upon some strong form in January. However, since a burst of six goals and three assists in 11 games, Wirtz has only scored once more in three months. The impish playmaker was bullied out of last weekend’s damaging derby defeat to Manchester United , operating as a false nine in tandem with Dominik Szoboszlai who predictably outshone his ephemeral teammate. Now Wirtz won’t get the chance to respond to that latest disappointment while he feels under the weather, as first revealed by The Athletic ’s James Pearce . It was clarified by BBC Sport as a case of a stomach bug.…