The bookmakers are offerings odds of up to 2,000/1 for Coventry City to win the FA Cup.
The 1987 FA Cup winners, who face Maidenhead United in a First Round on Sunday November 5th at 2pm are priced at 2000/1 with Bet365 and as low as 500/1 with Sky Bet, Sporting Bet, Bet Stars and Stan James.
Chelsea are are the 6/1 favourites, followed by Manchester City and Manchester United.
Coventry City season ticket holders have until Friday morning at 9am to reserve their seat for the game.
Only the Main Stand will be open for City supporters unless demand dictates opening the East Stand for the tie against Maidenhead United, who are 5000/1 to win the competition.
Tickets are on general sale and are priced at £13 adults, £7 for 60+/U18's and £2 for U13's.