Chelsea were one of the biggest spenders in last summer's transfer window, when they splashed over £150m on five new players.
As we reach the half-way stage of the season, the Premier League champions will have perhaps hoped for a bit more from their title defence.
While the Blues have not been at their best overall, how have the new signings fared? Here's how each player has done in their first season for Chelsea so far:
5. Davide Zappacosta
Under Antonio Conte, Chelsea led the charge for teams opting to play wing-backs in the Premier League. Davide Zappacosta became the latest addition a right-back to fit Conte's style.
Since making his reported £23m move to London, Zappacosta has had to contend with Victor Moses for a place in the starting lineup. The Italian defender has played a bit-part role this season because of this rotation.
Perhaps a useful squad player, Zappacosta does not do much to improve Chelsea in that position. His crossing ability has been called into question this term, and many fans would opt to have Moses start over the new man.
4. Antonio Rudiger
With David Luiz seemingly out of favour at the Blues, Antonio Rudiger has been given the chance to flourish and prove to be a solid addition to Chelsea's defence.
Signing from Roma for around £30m, Rudiger has shown himself to be a reliable choice in Chelsea's back-three as well as an adept passer of the ball. He has also been a goal threat this term, scoring three goals in all competitions.
The German has sometimes found himself rotated out of Chelsea's starting lineup. But as a favourite amongst the fans, Rudiger looks to be first choice at the Blues for some time.
3. Danny Drinkwater
Injuries meant that Danny Drinkwater did not make his first Premier League start for the Blues until November. Despite only making a handful of appearances for Chelsea since his £30m move from Leicester last summer, Drinkwater has impressed.
Providing another option in central midfield for Chelsea, manager Antonio Conte claimed that Drinkwater gives his team better tactical options during big games. While he might not always feature regularly, the Englishman could prove to be a useful squad player for the Blues.
2. Tiemoue Bakayoko
Tiemoue Bakayoko's performances this season have a been a bit like his hairstyles - inconsistent. Signs of brilliance in the centre of midfield can just as often be undone by some woeful displays.
As the direct replacement for Nemanja Matic, Chelsea would have hoped £40m Bakayoko could bring some stability in midfield. Instead, a lot of fans have called for him to be sold back to Monaco.
Still only 23, the Frenchman still has plenty of time to fulfil his potential. He will be hoping for some stronger performances in 2018.
1. Alvaro Morata
Chelsea's biggest investment of the summer, Alvaro Morata cost the Blues £58m to sign from Real Madrid.
The Spaniard seems to have fit in seamlessly to replace Diego Costa as Chelsea's number one striker. Half-way through his first season for the club, Morata has 12 goals in all competitions.
The only critique for the 25-year-old is that he can sometimes be wasteful in front of goal. Despite sometimes missing big chances however, Morata can be regarded as one of the best Premier League signings of the season.