Redknapp is talking crap. Mark Hughes spent 200 million at City, to go from finishing 8th to finishing 9th. Mancini has spent round about 200 million and totally transformed the team. So that just proves that Redknapp is talking nonsense.
As for who is the better manager between Mancini and Redknapp, well imo Mancini is streets ahead. Mancini has been a manager for 10 years and won 10 trophies where as Redknapp has been a manager for decades and won 1 FA cup I think.
Mancini has won trophies without spending a penny at Lazio and Fiorentina. Redknapp nearly bankrupted Pompey in his quest for the FA cup.
Ask yourself this, would Redknapp be able to go over Italy and in 2 years learn the language, transform a team, win trophies and challenge for the league?? I seriously doubt it.
Redknapp is the one who has had it easy at Spurs, there has been no pressure on him at all and he has been in the english league all his life.
Redknapp might be a better wheeler dealer but as a football manager in regards to tactics etc then Mancini is head and shoulders above.