Pay and jobs decided in London, sponsorship in Chicago
Aon announced its £80m four-year shirt sponsorship deal with Manchester Utd to coincide with redundancy notices being handed out at its London headquarters, The Telegraph reports.
"It would appear to be an appropriate time for an Arsenal fan to leave the company,” said one Aon worker.
The job losses came on top of no bonuses this year and a freeze on salaries.
Aon has emailed staff explaining that pay issues are decided in London while sponsorship is decided in Chicago, the Telegraph said.