The upcoming January transfer window offers an opportunity for Premier League clubs to strengthen - but which teams' summer investments have paid off this season?
Paul Pogba, John Stones and Shkodran Mustafi were among the most expensive acquisitions but are they the top performers among summer transfers?
Here, using WhoScored.com's stats-based ranking system, we pick out the top 10 summer signings, based on their performances in 2016/17 so far (minimum 10 appearances)...
10. Victor Wanyama - WhoScored.com rating 7.16
Having long been linked with a move away from St. Mary's, Wanyama finally got his wish in the summer in a switch that saw him reunited with former Southampton boss Mauricio Pochettino. While Spurs' transfer activity ahead of the current campaign has come in for some criticism having failed to secure the requisite strength in depth to juggle both domestic and European responsibilities, the Kenyan has been the obvious exception to that theory.
The 25-year old has started every league game for Tottenham since his arrival, scoring twice and completing more passes per game (48.9) than any team-mate at the heart of the XI.
9. Joel Matip - WhoScored.com rating 7.16
While Liverpool's defensive issues have continued this season to disrupt what otherwise would surely be a serious title bid, the consensus is that Matip has proven a very shrewd acquisition. Signed on a pre-contract agreement in January, the centre-back has made a solid start to life in England, and his composure on the ball has been a real asset to the way that Klopp wants his side to play.
The Cameroonian has completed the eighth most passes per game in the Premier League this season, with 56 enough to rank second of all centre-backs. Moreover, he is yet to commit a single error leading to an opposition shot, where seven other Liverpool players have.
8. David Luiz - WhoScored.com rating 7.16
When Chelsea re-signed David Luiz for an eye-watering £30m fee on deadline day, it's fair to say most neutrals and pundits saw the move as an act of desperation. In the past we've needed to tread with caution when praising the Brazilian but it's a switch that is now looking like something of a masterstroke. Dictating play from the heart of Conte's favoured back three, the former PSG man is looking far more assured with players either side of him.
Now able to step out from defence with far less risk, Luiz is averaging the most shots per game of any centre-back in the league (1.2), while an average of 5.3 clearances per game ranks first of all Chelsea players by a distance.
7. Shkodran Mustafi - WhoScored rating 7.32
While new centre-back signings can tend to take time to adjust to the Premier League, Mustafi is perhaps the most notable of a strong batch of defensive arrivals from the summer. The German's recent injury lay-off has certainly unsettled Arsenal's attempts to return to the summit of England's top-flight, with the Gunners losing both games since his absence.
Wenger's side have lost three of five matches without the 24-year old in the league this season having not suffered a single defeat in his 12 starts, nine of which resulted in wins. His average of 3.1 interceptions per game is enough to rank seventh in the league thus far.
6. Idrissa Gueye - WhoScored.com rating 7.32
Having played a pivotal role in Everton's excellent start to the season, summer signing Gueye has been one of very few Toffees players to emerge out of a dismal couple of months since with any credit. It's fair to say his arrival from Villa - given their woes last season - didn't excite too many fans but the Senegalese international has continued to showcase a superb ability to break up play.
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A total of 79 tackles is comfortably the most in the Premier League this season, while an average of 47.4 accurate passes per game is top for Everton by some margin.
5. N'Golo Kante - WhoScored.com rating 7.35
If this year is anything to go by, the secret to success is N'Golo Kante. The Frenchman, having been central in a very literal sense to Leicester's remarkable triumph last season, earned a big money move to Chelsea and has adapted to his new surroundings with the same ease that saw him become a Premier League star in his first season in England.
While averages for both tackles and interceptions have understandably dropped given Chelsea's differing approach to that of the Foxes, 3.1 tackles and 2.8 interceptions per game are both top for the Blues. Moreover, the 25-year old has completed the second most passes in the top flight.
4. Zlatan Ibrahimovic - WhoScored.com rating 7.42
Despite coming under real scrutiny at times already this season - not least due to a run of six games without a goal earlier in the campaign - Ibrahimovic's recent form has silenced any critics. A tally of 11 Premier League goals is now the third most behind Costa and Sanchez, including seven in his last six appearances, and accounts for a whopping 46 per cent of United's modest 24-goal total.
His hold up play has also been a real asset to Jose Mourinho, and while the Swede is yet to register an assist in the Premier League, only one team-mate has created more chances this season (25).
3. Marcos Alonso - WhoScored.com rating 7.52
Much like the move for Luiz, when Chelsea announced the signing of Marcos Alonso, many were underwhelmed by the arrival of a former Sunderland and Bolton full-back. What they failed to take into account, however, was the fact that the Spaniard had honed his skills in Italy with Fiorentina, coming on leaps and bounds as a wing-back for the Viola to convince Conte that he was the perfect fit for his team.
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Now nearing the midway point of the season, the manager's assumption seems to have been correct, with Alonso contributing at both ends. The 25-year old has a goal and 2 assists to his name, has created 1.3 chances per game and chipped in with an average of 2.8 tackles to boot.
2. Paul Pogba - WhoScored.com rating 7.70
When any player makes such a high profile and indeed record breaking move there is always going to be pressure to hit the ground running so when Paul Pogba failed to score or assist in every game he was quickly labelled a flop by some. However, as he and indeed the entire side have settled under new management the Frenchman's importance to this United side is already abundantly clear.
While three goals and two assists may be modest returns given the midfielder's quality, his understanding with Ibrahimovic is exceptional and easily the Red Devils' most consistent route to goal. Tallies of 49 shots, 44 dribbles, 30 key passes from open play and 1143 passes are each among the league's top 10 players.
1. Sadio Mane - WhoScored.com rating 7.71
Just edging out Pogba as the signing of the year is Sadio Mane, whose fine start to life in the red of Liverpool culminated ahead of Christmas with a match winner in the Merseyside derby. The winger's late strike was his eighth goal of the Premier League season, while further four assists means that no team-mate has had a direct hand in more goals this season.
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Mane is, as a consequence, the fifth highest rated player in the Premier League this season so far, ranking among the top 10 players in terms of dribbles (41). Moreover, the fact that only three players have won possession in the attacking third more times than the Senegalese this season (15) has made Mane the perfect fit for Klopp's system.