With Cristiano Ronaldo returning to Manchester United instead of signing for Manchester City, Greater Manchester Football have taken a look at some of the most shocking transfers involving Manchester United and Manchester City. We also explore some other controversial signings. Carlos Tevez to Manchester City in 2009 This was a strange one. Tevez had spent the previous two seasons at Old Trafford, where he won the Premier League twice and the Champions League in 2008. The Argentinian had claimed he was never offered a new contract at United. He was the latest signing to join the ongoing revolution across the city. City announced the transfer with this cheeky poster. How good was Carlos Tevez at Manchester City? Click here to find more news from across Greater Manchester More Manchester City news can be found here Michael Owen to Manchester United in 2009 The former Liverpool striker signed for United in 2009 after being released by recently relegated Newcastle United. It was