If you ever need an example of someone being thrown in at the deep end look no further than Eliaquim Mangala being given his Premier League debut against Chelsea.
Jose Mourinho's side had plundered 15 goals in just four Premier League outings before the weekend trip to City so it was perhaps a surprise to some that Manuel Pellegrini chose the game to give Mangala his first taste of action in a City shirt.
Coming up against Diego Costa, who'd already netted seven goals this season, Mangala looked like he was born to play in the Premier League, leaving Vincent Kompany suitably impressed.
Kompany has become a Premier League star by getting the best of strikers like Costa, but the ease with which Mangala took to the task impressed the Manchester City captain.
While Kompany has been a mainstay in the defence during the glory years at the Etihad, City have struggled to find a reliable partner, although Martin Demichelis impressed towards the end of the last campaign.
Mangala, chosen ahead of the more experienced Demichelis on Sunday, looks like he could be the long-term partner both Kompany and the club have been waiting for, and his captain was encouraged by his start.
The Belgian told the Manchester Evening News: "He was tremendous. I don't think he's played for five months. I think it is up to him how good he could be but it looks like he is eager to progress, which is important at his age as he is still young."
Despite completing his move to City last month Mangala has had to wait for his debut, and his performance against Chelsea was well worth waiting for.
At 23 Mangala is still young for a central defender, but Kompany is insistent he has what it takes to be a top defender.
The City captain said: "Obviously you can see he has all the basics to be more than a good defender. He will need some time, like everyone else, and with time he will improve. Going by this performance you will be looking forward to what he can achieve."
Having spent the early part of his career in Belgium and Porto, the Premier League represents a step up for the young Frenchman, but City will hope he can fulfill his undoubted potential.
It came as no surprise when Mangala completed a £32 million move from Porto this summer after he'd been heavily linked with City for a long time.
Chelsea and Manchester United were also credited with an interest in the French international, but it was City who won the race, confirming the deal in August.
Prior to the move I had suggested he'd be best served by spending another year in Portugal, but on Sunday's evidence his move to City was long overdue.
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