Thursday night's UEFA Europa League fixture between Arsenal and PSV Eindhoven at the Emirates Stadium has been postponed.
UEFA confirmed the game will be pushed back because of 'severe limitations on police resources' in London due to the funeral of Queen Elizabeth II.
It raises the possibility that further top-level matches to be played in the capital over the weekend will also be called off for the same reason.
PSV said in their statement that no date for the rearranged game had yet been confirmed.
A UEFA statement said: 'UEFA today announced that the UEFA Europa League tie between Arsenal FC and PSV Eindhoven, originally to be played on Thursday 15 September, has been postponed with a new date to be communicated in due course.