Watford's second round League Cup tie against League 1 side Doncaster Rovers has been scheduled for Tuesday, August 26.
The Hornets were drawn at home to Donny, who were relegated from the Championship last term, after beating Stevenage 1-0 at Broadhall Way on Tuesday evening.
Tickets for the game at Vicarage Road are priced at £10 for adults, £5 for 16 to 19 year olds, over-65s and students and £1 for under-16s.
Prices for the Upper Graham Taylor Stand will be set at £12, £7 and £2 and are on sale from 11.30am on Friday.
Kick off is at 7.45pm.