Think it's also pretty fair to consider that he was nowhere near the fitness levels we'd like to have seen and maybe injured himself getting there. Klopp doesn't seem the petty or cruel type so I don't think, unless he looked absolutely dire in training, that'd he intentionally neglect him. Rhys and Nat had been with the club since the beginning of the season, trained with the first team consistently, and knew the system, don't think it's any more complex than that really.