Any rebuild of Stamford Bridge could take as long as five years, meaning the Blues would need to find another stadium to play their games in. They could potentially ground-share with local rivals Fulham at Craven Cottage, or follow Tottenham's example and move into Wembley, but moving to a new site would allow them to keep playing at Stamford Bridge until the construction was complete.
They cannot leave without the approval of the Chelsea Pitch Owners organisation. As many as 75% of 14,000 members would have to vote for the move to go through.