Manchester United recently surpassed Real Madrid and FC Barcelona as the richest football club in the world, but the English giants also have the biggest debt – you can find the full overview here.
Tired of reading? Click through the gallery to see the 12 clubs with most debt.
The Red Devils have net debt worth €536 million (R7.75 billion) on their books, according to UEFA's Club Licensing Benchmarking Report for 2015.
United now owe over €200 million (R2.89 billion) more than second-place Benfica, who have a net debt of €336 million (R4.86 billion).
However, UEFA also insisted the level of debt must be analysed in the context of revenue and long-term assets.
United's debt almost equalled the club's revenue in 2015, which is a healthy balance compared to fifth-placed Queens Park Rangers, for example. The Championship side's debt is worth €279 million (R4.04 billion), around half of United's amount, but it equals 250% of the club's revenue.
UEFA also noted that the combined debt of Europe's top-division clubs has decreased notably in the past six years, from the equivalent of 65% of revenue to 40% of revenue at the end of the 2015 financial year.
Clubs such as Inter Milan, Valencia, AC Milan and Juventus are also among the 12 clubs with the most debt in football.
Read: Man Utd Overtake Real As World's Richest Club
Note: Revenue in football equates income from transfers, sponsorships, merchandise sales and matchday turnover.
Do you think United need to do more to get rid of their massive debt? Have your say in the comments section below.