It is not just the fans of Manchester City, Liverpool, Tottenham Hotspur, Leeds United and Wolves who are cheering a successful transfer window.
Football super-agent Jorge Mendes also has cause to celebrate since he will pocket the commission on a string of mega deals he brokered in the last few months, generating a staggering £260million in transfer fees.
And Jonathan Barnett, who was named as 'the most powerful sports agent in the world' last year, has done well for himself and his clients, too, His Stellar Group agency negotiated £135m worth of player sales.
But it's been a relatively quiet window for the third member of the agents' super club, Mino Raiola. The man who put together Paul Pogba's £89m move from Juventus to Manchester United in 2016, facilitated only £18m of transfer business.
Jorge Mendes has had a successful transfer window helping to facilitate some huge deals
Mendes, who runs the Portugal-based Gestifute sports agency, represents Ruben Dias, Diogo Jota, Nelson Semedo and Nicolas Otamendi - among others - who made big-money moves in the summer window.
Despite the worldwide coronavirus pandemic, Mendes, who famously oversaw Cristiano Ronaldo's £100m move from Real Madrid to Juventus in 2018, has had another good year.
While most of the major European leagues locked down with clubs reducing their net spend to around zero, Mendes was still able to broker plenty of business in the high-rolling Premier League, where spending was above £1.2billion.
Source: Daily Mail Online and transfermkt.co.uk
Agents' fees are a major part of any deal with the total spent on intermediaries last year topping £500m for the first time, according to FIFA, but it is often not known how much the agent was paid in an individual deal or window.
'When people try to estimate what agents have made in the window they are often wildly inaccurate,' said Dan Chapman, Head of Sports Law at Leathes Prior solicitors and himself an agent.
'The only people who know what has been paid to the agents involved are the clubs and the agent, and the player too if they have properly scrutinised the documentation.'
'There are many different ways an agent might get paid because they can act for everybody, the selling club, the player and the buying club.'
Mendes has made money from deals involving other agents' players, according to reports in Spain and Portugal, including the transfers of Francisco Trincao and Fabio Silva
For Mendes, that includes being paid for brokering deals involving other agents' players.
The £35m transfer of 18-year-old striker Fabio Silva, who is represented by Soccer Talents Vision, from Porto to Wolves earned Mendes and his agency £6.4m for helping the deal to go through, according to reports in Portugal.
Similarly, 20-year-old Francisco Trincao's £26m move from Braga to Barcelona also involved an agreement to pay £6.4m for Mendes' services, according to the Spanish website AS, despite the fact the player is a client of agent Bruno Carvalho.
Mendes reportedly received £1.4m upfront with a further £5m available in add-ons,
It is not just Mendes who has benefited from the surprising profligacy of the Premier League clubs this summer.
Jonathan Barnett's client Ben Chilwell moved from Leicester City to Chelsea for £50m
Jonathan Barnett, co-founder and chairman of the London-based Stellar Group, sorted Ben Chilwell's move from Leicester City to Chelsea for £50m, but also managed Gareth Bale's loan deal at Spurs and Adam Lallana's free transfer from Liverpool to Brighton.
Meanwhile, Raiola, whose A-list clients include Zlatan Ibrahimovic, Mario Balotelli and Borussia Dortmund striker Erling Haaland, who is valued at £72m, was quieter than normal.
He dealt with a handul of modest transfers in Italy and a loan move for Justin Kluivert, 21, from AS Roma to RB Leipzig for a fee of just under £1m. Kluivert is the son of legendary Holland international striker Patrick, who is now academy director at Barcelona.
However, agents can actually make more money from negotiating new contracts for players who are staying put, so if, for example, Raiola's client Pogba were to agree to extend his stay at Manchester United, it would probably be a lucrative deal for them both.