Mikel Arteta has been given until Friday to respond to his Football Association charge for comments he made after Arsenal's defeat by Newcastle earlier this month.
The Gunners boss branded the VAR decision not to rule out Anthony Gordon's goal in his side's 1-0 defeat at St James' Park 'an absolute disgrace'.
Arteta has been charged with a breach of FA rule E3.1 and initially had until Tuesday to offer his response.
However, that deadline has now been extended until Friday at the Gunners' request.
VAR made a triple check to see whether the ball had gone out of play before Joe Willock's cross, whether Joelinton had fouled Arsenal defender Gabriel and whether Gordon had been offside.