Chelsea themselves had an almost ideal window after Saul Niguez was signed to follow up the brilliant addition of Romelu Lukaku.
Their rivals have been quite busy too and here's a look at how the Blues' top 6 rivals spent their money this summer and if it made them better.
Manchester City
Ins: Jack Grealish, Scott Carson
Notable outs: Sergio Aguero, Eric Garcia
It was a relatively quiet window at Manchester City with Pep Guardiola keeping hold of his best players and bringing in Jack Grealish on a £100 million transfer from Aston Villa.
However, the oil-rich club have failed to sign Tottenham striker Harry Kane and head into the new season without a dedicated No. 9.
Rating: 6/10
Liverpool
Ins: Ibrahima Konate
Notable outs: Georginio Wijnaldum, Xherdan Shaqiri, Harry Wilson, Marco Grujic
Ibrahima Konate, the £36 million centre-back from RB Leipzig, is Liverpool's only major transfer of the summer.
No replacement for Georginio Wijnaldum in midfield was signed and Jurgen Klopp's side mostly focused on renewing the contracts of several key first-team players.
With the likes of Chelsea and Manchester United gaining an edge, this window can be classed as a missed opportunity at best for the Reds.
Rating: 3/10
Tottenham
Ins: Cristian Romero, Pierluigi Gollini, Bryan Gil, Pape Matar Sarr, Emerson Royal
Notable outs: Danny Rose, Erik Lamela, Moussa Sissoko, Serge Aurier
Tottenham are reaping the rewards of a very successful summer transfer window, sitting at the top of the Premier League table with 9 points after 3 games. However, keeping hold of Harry Kane could prove to be Spurs' biggest deal of the deal.
The England skipper is yet to start firing and things are looking up for Spurs under new manager Nuno Espirito Santo's men this season.
Rating: 7.5/10
Arsenal
Ins: Nuno Tavares, Albert Sambi Lokonga, Ben White, Martin Odegaard, Aaron Ramsdale, Takehiro Tomiyasu
Notable outs: Dani Ceballos, David Luiz, Willian, Hector Bellerin, Joe Willock
Few clubs can spend £150 million in one transfer window and still leave their fanbase leaving completely demoralised — but Arsenal have somehow managed to pull it off.
The Gunners have brought in a lot of young and promising talent but Mikel Arteta's men remain rock bottom of the Premier League table after finishing 8th last season.
The problem seems to be much deeper than something that can be fixed with just transfers but that in itself is deeply concerning for our London rivals.
Rating: 3/10
Manchester United
Ins: Jadon Sancho, Cristiano Ronaldo, Raphael Varane, Tom Heaton
Notable Outs: Sergio Romero, Axel Tuanzebe, Dan James
Manchester United brought in 3 world-class players and replaced Sergio Romero with a good 3rd keeper to have in the squad.
They also didn't lost any significant players and the signings of Ronaldo and Sancho will surely take their attack to the next level.
Quietly one of the best windows of any club, although they did fail to address the defensive midfielder position which could prove to be a problem.
Rating: 7.5/10
Latest news
