He'll be in the World Cup squad as long as he's not hurt, doesn't matter how bad he was this season. The only question is if it's him or Johannsson who starts.
I wouldn't have thought it possible a few months ago, but Luis Gil seems to have given Klinsmann something to think about. Good start to the season and if he plays/trains well this week then I'm sure he'll get in the 30-man squad in May.
I doubt Man City buy a partner for Kompany, they seem pretty set on Nastasic. Probably just replace Demichelis or Lescott with someone better/more reliable.