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Chelsea spent the most of all teams in the Premier League during the summer transfer window.
The Blues went all out to sign Thiago Silva, Timo Werner, Ben Chilwell, Edouard Mendy, Kai Havertz and Hakim Ziyech.
However, it was Havertz who cost the most, as Chelsea went all out to spend £70m on a player with potential but not much experience.
Liverpool legend Jamie Carragher has now asked Chelsea boss Frank Lampard if there was any need to sign Havertz.
He said: “After an inconsistent run, Frank Lampard has been playing down the idea Chelsea were ever title contenders. Maybe this season was too soon, but although he may not have the best starting XI in England, Frank certainly has one of the strongest squads. I am starting to wonder if he has too many options and that is why he is yet to settle on the right formula.
“I look at Kai Havertz and wonder if Chelsea really needed to sign him last summer? He is obviously a player of great potential, but it never works buying a player because he is so highly-rated, unless you have a predetermined idea where he will fit into the side.
“Timo Werner has also taken time to adapt as he is accustomed to playing in a side built to counterattack. Like all the top sides, Chelsea come up against teams with ten men behind the ball so do not get a chance to counterattack.
“It looks like it will be another year of gradual improvement for Lampard, fine-tuning the formation ahead of a more sustained title challenge next season.”