Chelsea have cancelled the Marcel Desailly Charity match on August 7 at Stamford Bridge.
They say: "Due to various logistical issues including the potential disruption to, and lack of guarantee, of ticket delivery due to the postal strike, the match has been postponed.
"The match is likely to be rescheduled for October 10 subject to fixture issues. Tickets purchased for the August date will be valid for the later date."