The German only held one training session with the squad ahead of the Premier League fixture, so he is delighted by the messages that have already been picked up and put into practise.
In particular, Rangnick feels the team showed greater control against the Eagles in a new formation and kept a crucial clean sheet at the Theatre of Dreams.
United earned the win thanks to Fred's sensational second-half goal and the beaming Brazilian is picked out for praise in Ralf's various post-match comments, which you can read here...
RANGNICK'S ASSESSMENT
"Overall, I'm happy.