- Morata appears to be uninterested in adapting to the demands of the physical Premier League
- But moving Hazard to the 'false nine' position was a huge gamble given the Belgian's success on the flanks
- N'Golo Kante looks a fish out of water in a more advanced midfield role than he is used to
Maurizio Sarri must solve Chelsea's striker crisis as his spluttering side bid to get back on track against Newcastle on Saturday.
Sarri's fourth-placed team are clinging onto a three-point lead over fifth placed Arsenal in the Premier League, leaving them with no margin for error in the race to qualify for next season's Champions League.
The root cause of Chelsea's recent dip has been their misfiring forwards.
Plagued by injuries, Olivier Giroud has managed just five goals this season, with only one coming in the league.
Alvaro Morata has netted nine times, but just five of those goals have come in his 16 league appearances.
Morata appears to be uninterested in adapting to the demands of the physical Premier League - the former Real Madrid forward's diffident style is the polar opposite of the bruising presence provided by Diego Costa, who fired Chelsea to two titles.
Sarri has recognised the fatal flaw in Chelsea's squad and installed Eden Hazard as his central striker on several occasions in a bid to spark his attack.
But moving Hazard to the 'false nine' position was a huge gamble given the Belgian's success on the flanks, where his sublime skills have more room to flourish.
Hazard has dropped several hints that he would prefer to remain in a wide role and his subdued performances up front have raised questions about Sarri's tactical switch.
With Hazard refusing to rule out joining Real Madrid following interest from the European champions, Chelsea need to keep their prize asset happy.
"They're definitely not getting the best out of Hazard," former Tottenham and England midfielder Jermaine Jenas said.
"You get the best out of him on the left, breaking from deep, running at players. That's how he scores a lot of his goals.
"Up top, with his back to goal, he is a lot easier to deal with.