The summer transfer window is reaching the business end as Premier League and European clubs look to get some last-ditch signing over the line.

The last few weeks of any window can always prove to be a rather frantic affair, with panicked clubs throwing money around like toddlers in a candy shop.

Already a monumental pile of cash has been spent by clubs in the off-season and that looks set to grow in the coming days as they look to finalise their squads for the campaign ahead.

The likes of Liverpool and Real Madrid coughed up massive sums to bring Darwin Nunez and Aurelien Tchouameni to their respective clubs while Barcelona went on a wild spending-spree.

So, while business savvy clubs can make an absolute killing from the sale of players, they are not the only ones who will be laughing all the way to the bank this summer.

That is because, if you're a successful football agent, then summer truly is the most wonderful time of the year.

Summer transfer window 2022: Start date, deadline day and everything you need to know

Agents across the globe can take home small fortunes by facilitating the sale of a player been two clubs and, when you have a large stable of players, those numbers can grow to eye-watering sums.

But which of the so-called super agents can boast the most valuable stable in the world?

Well, thanks to an in-depth study from the folks over at SportingPedia, we can reveal the 10 agents with the most valuable gaggle of superstars in their quivers.

Incredibly, the highest value stable comes in at an astonishing €1.51 billion with the agent in 10th place representing just a single player with a worth of €50 million.

Check out the full list in the SportingPedia graphic below:

Jonathan Barnett tops the list thanks to his massive stable that see's him represent, through ICM Stellar Sports, the interest of an incredible 794 players.

That means his average player value is far lower than that of his nearest competitor, Jorge Mendes, who represents 137 players.

Paulo Bursado, Rafaela Pimenta and Pini Zihavi then round out the top five with stable values of €852.7 million, €760.1 million and €345.55 million respectively.

It just goes to show that, as transfer fees continue to grow, being a powerful and well respected agent can be an incredibly prosperous gig.

While they are often much-maligned characters in the game, there can be no doubting the importance of the agent in the modern day footballing eco-system.