Will Ralf Rangnick Bring an End to Ronaldo's Days at Manchester United?

Manchester United’s newly-appointed interim manager, Ralf Rangnick, has pundits pondering whether Cristiano Ronaldo’s days at Old Trafford are numbered. Rangnick is known for his highly-effective gegenpressing system, while Ronaldo has won every trophy as the system. Can a footballing zealot and messiah co-exist?