Klopp confirmed the 25-year-old, who has scored 38 goals for Liverpool in all competitions this season, will be assessed in the coming days ahead of their Premier League clash against local rivals Everton at Goodison Park.
"About Mo, I don't know in the moment," Klopp told reporters. "He came to the sideline and said he feels sometimes, something. That was enough for me to not even ask the doctor how he was, so we immediately took him off the pitch.
"After the game I asked him and he said, 'I will be good, it will be fine'. But now we have to wait for the real diagnosis, not Mo's self-diagnosis."
Liverpool will defend their three-goal advantage against City in the return leg at the Etihad Stadium on Tuesday.
(Reporting by Hardik Vyas in Bengaluru; editing by Sudipto Ganguly)
