The Germany international joined the Champions League holders in the summer as a free agent after his deal at Stamford Bridge expired.
Rudiger had initially hoped to extend his five year spell in west London but Chelsea were unable to offer him fresh terms under the terms of the license they were forced to operate under following the UK government’s decision to sanction Roman Abramovich.
With Chelsea hamstring, Real sensed an opportunity and were able to prise the former Roma centre-half from the Premier League giants.
Rudiger has started only four games so far for his new club but the personal touch of Ancelotii is, by his own admission, like nothing he has experienced before in his career.
He told German outlet Sport1: ‘I had only been in our new house with my family for a few hours – we were just barbecuing – and the doorbell suddenly rang.
‘I opened it and Carlo Ancelotti was just standing in front of me. A wow moment. He sat down at the table with us, ate with us and got to know my family.
‘Very normal, very down-to-earth. He was there for two hours, we talked about everything.
‘I’ll be honest, I’ve never experienced anything like it, no coach has ever done something like that for me. After the few months with him,
‘I have to say: When it comes to dealing with players, Ancelotti is untouchable. Stop Don Carlo, a coaching legend – he already collected Champions League titles when I was a child.
‘Working with him every day now and at the most successful club in the world is wonderful.’