Kevin De Bruyne was absent from Manchester City training ahead of the Blues' Premier League clash against Tottenham Hotspur on Thursday night.
The Belgian midfielder played the full 90 minutes as Pep Guardiola's side lost to Manchester United in the derby on Saturday afternoon, so it remains unclear why the 31-year-old was missing from training on Tuesday.
The midfielder has made a strong start to the season and has registered three goals and 16 assists in 25 appearances in all competitions this term. He has not missed any games through injury this campaign, but has been rested on a few occasions.