European football's chief governing body, which also administered a €30 million ($48.5 million) fine, ruled City was guilty of "serious breaches" of its Financial Fair Play (FFP) regulations.

It marked the end of a lengthy probe into City's financial affairs, which was launched following a series of allegations made by German publication Der Spiegel in November 2018.

City denied any wrongdoing throughout the process and immediately announced its intention to appeal against the decision.

Below we look back at how this point was reached.

November 2018: Football Leaks allegations emerge

It has been 15 months since Der Spiegel published a host of articles claiming the defending Premier League champion flagrantly flouted UEFA's FFP laws. The German publication purportedly gained the information from whistleblowers Football Leaks and claimed Sheikh Mansour's City regime topped up multi-million-pound sponsorship deals with Abu Dhabi companies, using its owner's fortune, to meet the financial rules. It was also claimed City was cut a favourable deal by UEFA for overspending in 2014. City said in response: "The attempt to damage the club's reputation is organised and clear".

November 2018: UEFA warns City FFP investigation could re-open

UEFA said it would consider reopening a 2014 probe, which saw City fined and have restrictions on the size of UEFA Champions League squad imposed, if "new information comes to light". Early in December, UEFA president Aleksander Ceferin said: "We are assessing the situation. We have an independent body working on it. Very soon you will have an answer on what will happen in this concrete case."

March 2019: UEFA launches formal investigation

It was almost a year ago UEFA formally started an investigation into Der Spiegel's allegations, with Club Financial Control Board chairman and former Belgium prime minister Yves Leterme warning the "heaviest punishment" City face is "expulsion from UEFA competitions". City said: "The accusation of financial irregularities are entirely false. The club's published accounts are full and complete and a matter of legal and regulatory record".

May 2019: City respond to ban reports

After reports emerged in The New York Times that City was facing the prospect of a one-year UEFA ban, the club released a statement registering concern that its "good faith" in UEFA's investigation into its financial affairs could be "misplaced". 

May 2019: "Hostile process" slammed by City

Leterme had earlier in the year told Belgian magazine Sport And Strategy that City should face a ban from UEFA competition if the allegations were proven. A strongly worded club statement slammed the CFCB investigation as a "hostile process" after the probe was referred to the body's adjudicatory chamber for a final decision after the completion of Leterme's inquiry. The club said it was "disappointed but regrettably not surprised" by the decision.

November 2019: Reports say City set to avoid ban

Towards the back end of last year, it was reported UEFA was struggling to enforce its FFP regulations and City could avoid a ban and escape only with a fine.

November 2019: CAS deems City appeal 'inadmissible'

In June last year, City appealed against UEFA's investigation into alleged breaches of FFP to the Court of Arbitration for Sport (CAS). However, five months later CAS ruled City's appeal as "inadmissible" because UEFA had not reached a final decision on the case.

February 2020: UEFA announces ban

After a lengthy process, UEFA announced City had been hit with a two-year ban from European competition and a hefty fine. The Adjudicatory Chamber of the CFCB found City guilty of "overstating its sponsorship revenue in its accounts and in the break-even information submitted to UEFA between 2012 and 2016". City again questioned the process of the investigation and announced its intention to launch an appeal with CAS "at the earliest opportunity".