Real Madrid are reluctant to make Kepa Arrizabalaga's loan move permanent, which could impact Chelsea's future transfer business.
The 29-year-old goalkeeper made costly mistakes in the Super Cup semi-final against city rivals Atletico on Wednesday, despite a 5-3 win, and officials in Madrid are increasingly unimpressed with the Spaniard, despite having an option to buy included in the loan deal.
Carlo Ancelotti has been advised to play Ukrainian goalkeeper Andriy Lunin ahead of the loanee, with Thibaut Courtois out through a long-term knee injury.
Kepa wants to stay at Santiago Bernabeu but his performances have thrown a permanent deal into doubt.
Chelsea want to sell their £71million signing, who became the world's most expensive goalkeeper when he joined in 2018, but he will have just 12 months left on his current £180,000-a-week Blues contract this summer.
It will leave Chelsea in a poor negotiating position as they aim to offload an unwanted player who wants to leave and is on a high salary. The club are happy with Robert Sanchez and Djordje Petrovic for the foreseeable.
Chelsea are keen to raise funds to sign a striker, left-back and central defender across the current January transfer window and the summer to fix Mauricio Pochettino's struggling squad.
However, player sales are key, especially with Chelsea looking unlikely to qualify for the Champions League amid a need to stay in line with the Premier League's, new and restrictive, Profit and Sustainability regulations.
Defender Ian Maatsen, who on Friday joined Dortmund on loan until the end of the season, and striker Romelu Lukaku, who is on loan at Roma, are also available for sale.
Chelsea are also happy with their two goalkeepers Robert Sanchez and Djordje Petrovic -- they are unlikely to make any changes in the position over the next few transfer windows.
