Manchester City are still a long way off agreeing a settlement with UEFA over sanctions for breaking financial fair play rules, according to a report by the Press Association.
City have until the end of the week to agree to the sanctions or face the case being handed to a panel for a non-negotiable decision.
They are one of nine European clubs, also including Paris Saint-Germain, who are being dealt with for rule breaches, and a source told PA Sport City are one of those furthest away from reaching an agreement.
The initial settlement offer made to City included financial restrictions on their Champions League squad for next season, and possibly a cut in the size of the squad, as well as a heavy fine.
Neither City nor UEFA would comment but PA Sport stated that the Manchester club have been negotiating forcefully for a significant reduction in that sanction but have been struggling to make progress.
The risk, however, is that if they are unable to agree a deal with UEFA then they could face even stiffer sanctions from UEFA's club financial control board's adjudicatory panel.
No club is expected to be excluded from the Champions League for breaching the spending limits, the maximum possible sanction.
Both City and PSG are believed to have fallen foul of the FFP rules with sponsorship deals related to each club's owners.
Abu Dhabi-owned City have a 40 million pounds a year deal with Etihad airways, while Qatar-owned PSG have a back-dated deal with the Qatar Tourist Authority which is worth up to 200 million euros a year.
Arsenal manager Arsene Wenger said last week UEFA needs to show it means business over FFP.
Wenger said:"There are rules to apply for the financial fair play. If you don't respect them, you have to apply the rules.
"One of the rules is that normally you should be banned for the excess of the financial amount that is not justified, that is if you are 100 million pounds overboard, you should be punished for 100 million pounds of your wages bill in the Champions League.''
Earlier on Monday, Jean-Louis Dupont, the Belgian lawyer who has taken UEFA to court over financial fair play told Le Parisien the new regulations will only reinforce the position of football's already established elite.