Saracens have confirmed they are in talks with Watford about staging matches during the first half of next season but have "other options".
The Men in Black are set to move to Copthall midway through next season but this will not happen before November, while they wait for the stadium to be redeveloped, and may not take place until early 2013.
Saracens chief executive Edward Griffiths said: "We'll have a look at that. We're in discussion with Watford but there are other options as well.
"We've only now cleared the final hurdle with Copthall so we need to look at the construction schedule and see when it will be physically ready to play but it won't be dull."