Back in 2008, Sheikh Mansour bought Manchester City for £210 million. Mansour is one of the world's richest men, with an estimated individual net worth of £17billion. Following his arrival at the club, excellent things began to occur for City fans - they gradually joined England's elite clubs while some of the world's best players were convinced by the lucrative project being heralded in the blue half of Manchester.
More importantly, they started to win trophies and a dynasty was soon forming. In the summer of 2016, arguably the world's best manager - Pep Guardiola - joined the ranks at Eastlands. The 47-year-old Spaniard has implemented his well-known tiki-taka system, which has seen them lift tree trophies in two seasons under his management. It requires players who are well-equipped technically and with a big transfer budget to spend, he's able to sign world-class players and fit them into his first-team plans.
With that being said, not all of his transfer targets have eventually gone to join Pep's project at Manchester City. So here, we take a look at five top players who the Premier League defending champions have failed to sign since his appointment two-and-a-half years ago:
#5 Marc-Andre ter Stegen
When Guardiola arrived at Manchester City, he was not satisfied with goalkeepers that the Citizens had at their disposal. Their first-choice at the time was Joe Hart. In his rigid system, the goalkeeper acts as the first line of attack, so naturally 'keepers must be very comfortable with the ball at their feet.
Hart didn't fit that playing style and despite some initial surprise, Guardiola was keen to find a top-quality replacement. He was searching for Hart's long-term replacement at former club Barcelona, with his first wish to acquire Marc-Andre ter Stegen, the German goalkeeper.
However, he refused to replace Barcelona for City and remained adamant that he'd be staying at the Nou Camp. As a result, Pep opted to sign the club's other senior goalkeeper Claudio Bravo.
Bravo endured a very disappointing debut season, tempting Guardiola enough to sign Benfica's Ederson Moraes in the summer of 2017. Since then, ter Stegen continues to prove his worth as one of the world's best and has fast become one of the first names on Barcelona's starting line-up every week.