Manchester City transfer window: Big summer spending at the Etihad
Picture source: VAVEL - Jonny Walsh

This summer has been another busy one for Manuel Pellegrini and Manchester City with a significant number of departures and arrivals which saw the former Premier League champions spend over £100million pounds.

Here is a look at their arrivals and how they will fit into Pellegrini's ever-improving team at Eastlands.

Enes Ünal - £2million

Ünal made his move to the Etihad five days into the transfer window and very much seems like a signing for the future.

The 18-year-old is highly-rated on the continent, through his time with Turkish Super Lig side Bursaspor and currently holds the record for the youngest goal-scorer in the Turkish top flight with his goal against the league's giants Galatasaray back in 2013 at just 16-years-old.

He was a feature in the pre-season matches against Melbourne City and Roma but at the end of July he was shipped out on loan to Belgian side Genk with Pellegrini insisting that the youngster needs regular competitive football under his belt - and he'll be undoubtedly hoping to impress the Chilean away from Manchester.

Fabian Delph - £8million

Fabian Delph's eventual transfer to Manchester City was arguably one of the talking points of this summer's transfer window.

Delph brilliantly captained former club Aston Villa to top-flight safety last season as well as an appearance at Wembley in the FA Cup final.

Rumours flew around about a move, but nobody could expected what would proceed. Delph looked destined for a move but the deal fell through in the final moments stating that he was a "loyal person" and wouldn’t be leaving the west Midlands side.

An unexpected turn of events followed and he finally completed his move following a dramatic change of heart within a week or so. The 25-year-old’s debut didn’t go according to plan as he was substituted 18 minutes in with a hamstring injury, he is on the verge of returning to full fitness having made a few cameo appearances recently, and the Englishman will be hoping to get himself back on-track after the international break; having established himself as one of the best central midfielders in the top flight.

Patrick Roberts - £11million

Another seemingly future superstar, Patrick Roberts was also brought in this summer from former Premier League side Fulham.

The 18-year-old rose to prominence in the youth levels of the England squad and made his debut in a substitute role against City in Fulham’s last season in the top flight. Roberts got the opportunity to impress for the West Londoners in the Sky Bet Championship, he went on to make only 17 appearances with zero goals and managed 90 minutes on just the one occasion.

Despite that, City obviously saw something in Roberts paying a hefty fee of £11m, however, four or five years from now, that could prove to be a bargain price indeed.

Nicolas Otamendi - £32million

City's defence last season was arguably the weakest it has been for some time but solidified their backline with the capture of Valencia’s Nicolas Otamendi.

The Argentine's impressive first and only season in Spain saw interest in the defender sky-rocket and an impressive Copa América tournament with his nation only added fuel to the fire.

It seemed any deal from City looked impossible as it looked certain that Otamendi would sign for City’s bitter rivals, Manchester United. However, the persuasive powers at hand saw the 27-year-old former Porto man switch to the blue side of the city.

After Vincent Kompany's and Eliaquim Mangala's excellent start to the campaign, it is difficult to see Otamendi shake that partnership, however, injury and poor form to either will see an excellent defender slot in effortlessly.

Raheem Sterling - £44million

City were prepared to splash the cash to improve their squad and certainly did that with the capture one of England’s excellent superstars in Raheem Sterling.

Sterling rose to heavy heights during his excellent, but short time at Liverpool. However, his time on Merseyside met an ugly end and has very much burnt his bridges with fans of the club with this transfer. City has had to pay an eyecatching price to bring the 20-year-old, £44m to be precise with the potential addition of another £5million pounds too.

He does seem well on his way to paying that price back having had an excellent start to the campaign and scoring his first goal in a sky Blue shirt in the win over West Brom and if he carries on the way he is going, it could easily be another great season for the talented forward.

Kevin De Bruyne - £55million

Frankly, it did not seem that they'd manage to top the arrival of Sterling in terms of price and overall quality, but City managed to better themselves with the signing of highly-rated creative midfielder Kevin de Bruyne.

The former Chelsea man lit up the Bundesliga last season and was one of the main reasons why Wolfsburg were so successful with his ten goals and an amazing total of 20 assists proving a huge contribution.

This move on a six-year deal made the 24-year-old the second most expensive player in English football just behind Angel di María after his move to city rivals, United.

It could prove difficult for Pellegrini to fit de Bruyne into his squad after Sterling's and David Silva's excellent starts to the campaign, but it’ll be a tactical headache that you just know Pellegrini will not mind having - and Jesús Navas will be watching nervously over his shoulder.