A clause found in the lease of Liverpool's Anfield home 14 years ago could mean that Everton can "evict" their local rivals after their lease on the land which their stadium is built on ran out in 1992.
Due to the complicated nature of the split between Everton FC and John Houlding in 1892, it transpired that Everton in fact owned 51% of the land which the Anfield stadium is situated on, but had let the land back to Houlding for a nominal fee on a 100 year lease.
In 1992, an agreement was reached whereby Liverpool paid Everton £1m a year rent for 15 years, at which point Everton became full owners once more, with the right to evict Liverpool from their home.
It is believed that Liverpool FC thought they would have competed a move to a new stadium by this point, and did not extend the deal when offered in 2002.