West Ham co-chairman David Sullivan believes the Hammers could have taken 20,000 fans to Old Trafford for their FA Cup tie against Manchester United on Sunday.
The Hammers played out a 1-1 draw with the hosts in the FA Cup quarter-final, being taken to a replay by the Red Devils courtesy of a late Anthony Martial goal.
Proceedings unfolded in front of 9,000 West Ham fans at Old Trafford, but Sullivan feels had the Hammers been handed more tickets for the game then they could have sold them out, such was the demand.
He wrote on his club's site: "Our 9,000 supporters who went up to Manchester were magnificent and it could have been 20,000 if we could have got the tickets.
"We will be pricing the replay at home far cheaper than the away game even though it's the quarter final of the cup", he continued.
relatedNewsStory
"It was disappointing that we could not hold onto the lead, but there is still everything to play for and it promises to be another special night under the lights."
In the Premier League, West Ham sit above Manchester United in the standings, in fifth, and just two points behind fourth placed Manchester City.
The Hammers are next in league action away at Chelsea this coming Saturday, before they then host Crystal Palace at Upton Park after the international break at the start of April.
