It's no secret that in football when you have the money you win things, and you can't win things until you have the money.
Then, the more you win things, the more money you need to keep winning things, meaning the biggest clubs become locked in a cycle of chasing larger and larger sponsorship deals.
You also have 'new money' clubs such as PSG and Man City entering the fray to complicate things even more.
Ahead of the 2022/23 season, Planet Sport looks at the clubs whose desire to keep on winning things (or win something in Tottenham's case) has landed them the most lucrative shirt sponsorship deals.
=8. Chelsea (€45m)
It's fair to say that Chelsea have had a tough 2022 from an operational point of view.
Former owner Roman Abramovich was sanctioned by the British government, throwing the club's very future into doubt. Another effect of that was communications giant Three suspending their shirt sponsorship deal with the club.
With Abramovich now gone, Three have decided to continue with the deal, which is worth €45million per season to Chelsea. There is only one year left on the original deal, though, so the Blues will be expecting a lucrative renegotiation soon.
=8. Tottenham (€45m)
Tottenham always seem to be able to take care of their money, and they have themselves a nice shirt sponsorship deal with life insurance company AIA.
They have been partnered with AIA since 2013, with the current deal extended in 2019.
On the face of it, it looks like good money, but ironically the better Tottenham do on the pitch the worse the deal becomes. They are locked into it until 2027, so if they perform well, which feels likely under Antonio Conte, that €45million figure will start to look poor compared to their rivals.
=8. Liverpool (€45m)
Liverpool's shirt sponsorship deal is with financial firm Standard Chartered, and it has been for a while.
The club are about to enter the last season of a 12-year deal, which was an interesting one from the start. Essentially, Liverpool took bigger money up front in exchange for a long-term deal, knowing they would be underpaid their worth towards the end of it.
That has now happened, and the €45million per year is less that their current standing in the game is worth. However, Liverpool will be free to negotiate a new deal from 2023, so expect them to shoot up the table.
=8. Juventus (€45m)
Juventus are one of those iconic clubs that will never go out of fashion no matter what they do, and as such they are paid accordingly.
Their shirts say Jeep, but that's the product, not the company itself. The sponsorship deal is with Fiat Chrysler Automobiles, which is owned by same company, EXOR, who own Juventus.
It's all a bit complicated and convoluted, but the upshot is that Juventus get €45million a year from it, plus non-specific 'variables'.
7. Arsenal (€46.6m)
It's reaching the point now where it's becoming quite difficult to disassociate Arsenal from Emirates Airlines.
They have held the stadium naming rights ever since Arsenal left Highbury and it's increasingly hard to imagine an Arsenal shirt without 'Fly Emirates' on it.
That association is only going to grow too, with the current shirt sponsorship deal worth €46.6million a year and still having two years left to run.
6. Bayern Munich (€50m)
Bayern Munich have a rich history and are serial winners in a league that lacks a natural financial equal for them.
That makes them all but guaranteed Champions League football every season, so it's little surprise to see them able to attract a mega-sponsorship deal.
Telekom, or T-Mobile to you and me, recently renewed their shirt sponsorship deal with Bayern Munich, increasing their financial commitment to €50million per year.
5. Manchester United (€55m)
Manchester United used to be the kings of the commercial world. Then again, they used to be the kings of the Premier League too.
They still aren't doing bad to be fair to them. The club will always attract money because of its size and brand.
Man Utd are about to start the second year of a five-year deal with German software company Team Viewer that is worth a very nice €55million per season to their coffers.
4. Manchester City (€60m)
When you delve into the murky pool of Manchester City finances, it is often difficult to emerge with any real detail.
They have had a lengthy partnership with Etihad Airways ever since the landscape of the club changed.
That is believed to be worth around €78million per year, with shirt sponsorship accounting for €60million of that and stadium naming rights accounting for a large portion of the remainder.
3. Barcelona (€62.5m)
With sponsorship deals like this one, you can't help but wonder what level of mismanagement was required to land Barcelona in debt to the tune of €1.35billion.
Spotify is replacing Rakuten as the club's main shirt sponsor and, while specifics have not been disclosed, it is reported to be a slight upgrade in financial terms.
It is also a four-year deal, which means it will ultimately be worth around €270million to the club. A significant sum for sure, but since Barcelona are a club who resisted the temptation to have a shirt sponsor at all until relatively recently, we should cut them some slack.
2. Paris Saint-Germain (€65m)
PSG have just started a three-year shirt sponsorship deal with Qatar Airlines, who replace French hospitality group Accor on the front of their shirts.
To be honest, PSG had things pretty good with Accor too, and while the Qatar Airlines deal is believed to be slightly higher, it essentially maintains the status quo.
Reports in France value it at between €60-70million per year for three years. Nice.
1. Real Madrid (€70m)
It's certainly no surprise to see Real Madrid still top of the commercial pops in football.
'New money' clubs such as Manchester City and Paris Saint-Germain enjoy inflated sponsorship deals largely as a way for their owners to circumvent the Financial Fair Play rules, but that's not the case with Real Madrid.
The fact their deal with Emirates reflects their actual commercial value just underlines the sheer global gravitas of the club.