Chelsea has rejected Bayern Munich's attempt to sign Christopher Nunku on loan.
Chelsea and the player prefer a permanent movement and conversations are going on.
The blues want to release Nunku, Nicolas Jackson, Carney Chukwuemeka and Ben Chilwell before bringing in a broad player and an attacking midfielder.
Alejandro Garnacho from Manchester United, Xavi Simons from RB Leipzig and Savinho from Manchester City, who is a target for Tottenham, have been discussed to varying degrees.
The London club made an overwhelming start to the Premier League season when Crystal Palace stretched a scoreless draw on Stamford Bridge on Sunday.
After a truncated preseason after the victory in the club World Cup, everything pointed to a Chelsea side that was missing both preparation and peace, while the Oliver Glasner team easily dealt with a new look but incoherent attack.
Ebereechi Eze started for Palace despite speculation that he is about to leave and if there were doubts about how supporters felt about the player whose goal won them the FA Cup in May, they were driven out when he was replaced to a standing ovation.
The International of England gave the game his only important talk point, which in the first half held in a brilliant free kick that was excluded after Marc Guehi had hindered the wall of Chelsea and had pulled a furious answer from Palace fans.
As expected, Nicolas Jackson was not in the Enzo Maresca team after he was made excess, with Newcastle considering an offer, while Joao Pedro was preferred at number nine above new signature Liam Delap.
Chelsea played 35 days after their victory over Paris St Germain in the club World Cup final in the United States and showed signs of mental fatigue in a first half of the display with little creativity.