All Blacks mental skills coach Gilbert Enoka, who introduced what he called a "no dickheads policy" into the New Zealand set-up, has joined Premier League club Chelsea on a short-term consultancy basis, the rugby team said on Tuesday.

Chelsea manager Graham Potter said it was a "tough decision" to leave Pierre-Emerick Aubameyang out of their Champions League squad for the knockout stages but said the Gabon striker still has a role to play at the London club.

Chelsea manager Graham Potter pleaded for time to gel his expensive collection of new stars after the Blues were held 0-0 at home by Fulham on Friday.

 Liverpool coach Juergen Klopp said he cannot understand how Chelsea were able to spend what they did in the January transfer window, insisting it is best left for others explain the rules.

Chelsea manager Graham Potter admits there will be some awkward conversations as he attempts to piece together a costly jigsaw puzzle and turn the club's massive spending spree into success.

Chelsea's record-breaking last-minute swoop to sign Enzo Fernandez took the Blues' spending in the first year of the club's new ownership to a staggering figure of more than £500 million ($616 million).

Chelsea have spent more than 565 million pounds ($695.29 million) on signing players since the new ownership led by Todd Boehly and Clearlake Capital completed their takeover in May 2022.

Paris Saint-Germain have asked the French league to approve the loan signing of Morocco star Hakim Ziyech from Chelsea despite the necessary paperwork for the deal arriving after Tuesday's January transfer deadline, the club told AFP.

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Premier League side Chelsea completed the signing of Argentina midfielder Enzo Fernandez from Benfica for a British record 106.8 million pounds ($131.46 million) on Wednesday after a day of complex negotiations between the clubs.

Chelsea continued their winter spending spree by announcing on Sunday they have completed the signing of France under-21 right-back Malo Gusto from Lyon.

Moises Caicedo has pleaded with Brighton to accept a club record transfer fee amid interest from Arsenal in the midfielder.

Liverpool and Chelsea continued their disappointing seasons as the injury-hit mid-table teams played out an uninspiring 0-0 draw at Anfield in the Premier League on Saturday.

Jurgen Klopp said a 0-0 draw with Chelsea on Saturday is a step in the right direction for Liverpool despite the point doing little for their chances of catching the top four.

Chelsea completed the signing of Noni Madueke from PSV Eindhoven on Friday to continue a remarkable spending spree.

RB Leipzig striker Timo Werner said on Wednesday he did not have any regrets over his decision to move to Chelsea rather than German giants Bayern Munich.

A second-half goal from Kai Havertz earned nervy Chelsea their first Premier League win of 2023 on Sunday with a 1-0 victory over lively Crystal Palace, easing the pressure on manager Graham Potter after a poor run of form.

Chelsea swooped to beat Arsenal to the signing of Ukrainian international winger Mykhailo Mudryk from Shakhtar Donetsk for a fee that could rise to 100 million euros (£88 million, $108 million) on Sunday.

Chelsea and Shakhtar Donetsk are close to an agreement over the transfer of Ukraine forward Mykhailo Mudryk to the Premier League team, both clubs said on Saturday.

Graham Potter pleaded with his Chelsea players to "stay together" after a shock 2-1 defeat at Fulham that saw Blues forward Joao Felix sent off on his debut before a decisive blunder from Kepa Arrizabalaga.