Saracens are holding talks with Barnet Council as they attempt to stage their Heineken Cup quarter-final showdown against Ulster at Allianz Park.
The club's new home can accommodate 10,000 fans, which is 5,000 seats short of tournament organisers the ERC's minimum capacity.
"There are a number of hoops to go through before we can hold the match at Allianz Park," explained club chief executive Edward Griffiths.
"We are in talks with the council over the capacity to see if it's perfectly possible to increase the capacity for one match, or if it's too soon."
Should Saracens not be granted their bid to stage the quarter-final, Wembley or Twickenham are the potential alternatives for the European clash.
"This is our home ground now so we'd like to stage the match here. This is absolutely our first choice," added Griffiths.
"We want to try and bring those discussions to a close by the end of next week. We want something agreed as soon as possible."