Explosive new accusations that Manchester City’s financial reports were “a web of lies” that allowed them to flout Uefa’s spending rules should be investigated by Uefa, according to senior figures at other Premier League clubs.

The German news magazine Der Spiegel has published further material from whistle-blowers Football Leaks, including extraordinary allegations of how senior figures at City, who are owned by Sheikh Mansour, proposed to get around Uefa’s Financial Fair Play (FFP) regulations.

The story claims that “sponsors from the owner’s home country simply send more money over” should any shortfalls occur and details suggestions that significant parts of sponsorship funds were provided by Mansour’s company, the Abu Dhabi United Group.

It was also alleged that, when City’s chief financial officer Jorge Chumillas asked in one internal email if they could change the date of payment for the sponsors from Abu Dhabi, board member Simon Pearce replied: “Of course, we can do what we want.”

Uefa’s FFP regulations were introduced in 2011, setting a limit on the amount of financial losses that any club could record. City were fined £49 million (of which £32 million was suspended) in 2014 for breaching those rules, but there was considerable external suspicion that even those losses had been hugely mitigated by inflated sponsorship deals connected to Mansour, who is part of the Abu Dhabi royal family.