#1 Saved Leicester City from debt by paying around 100 million, bought back the stadium and enjoyed success:

The foxes were in severe debt and in danger of losing their home stadium in 2010. Club was getting battered in the second division, and the fans were riling up in numbers in want of an ownership change.
Chairman of King Power, Vichai Srivaddhanaprabha showed interest and bought the club for a fee of 34 million. They bought the stadium back and said it would be named King Power Stadium as long as they take charge of this club. Eight years on, Leicester City Football Club is valued at 350 million.
The club started to get stabilized day by day. Four years into the ownership, the Foxes lifted the Championship title in 2014 which paved way for Premier League status. Upon moving to the Premier League, he assured that the Foxes would be challenging to finish in a top 5 spot within three years. Those claims were laughed off by the majority of football watchers.
Nigel Pearson's sack meant the club had appointed the Italian Claudio Ranieri in 2015. The former Chelsea manager went on to win the title during his debut season with the foxes. This will be fondly remembered by the Leicester City faithful. The following season saw Craig Shakespeare take the club to the Champions League quarter-finals for the first time in their history.
Vichai is seen as a king of Leicester City for his contribution on and off the field. The cit is shaken by this accident, and the whole football fraternity is pouring in messages and tributes.