Leave campaigner Michael Gove appears to have conceded that in the event of a Brexit the UK will not actually leave the European Union by the end of Parliament in 2020.
Speaking on Peston on Sunday he set out his ambition to see immigration come down to the tens of thousands under an Australian-style points system.
But Mr Gove said he would not put a time limit on it as "we wouldn’t have left the European Union by the end of this Parliament".
He added: "We would in due course bring it down to tens of thousands. Yes."
Article 50 of the Lisbon Treaty stipulates a withdrawal from the EU must be within two years, which would be by 2018.
Gove claims many entrepreneurs in favour of Brexit
Mr Gove also claimed that "most of those who have built their own business, created their own wealth" are in favour of Brexit, although he failed to name any entrepreneurs specifically.
At the moment, uncontrolled numbers coming in here, not only depress wages for working people, it's also the case that they put a considerable strain on pubic services. On housing, on the National Health Service and of course on school places. We grew very successfully in the 1980s and the 1990s with migration in the tens of thousands.
Tories "will all pull together" after referendum
Asked whether the Conservative party can stick together following an attack by Sir John Major on what the former prime minister called the Leave campaign's "squalid" and "deceitful" Brexit campaign, Gove said: "Whatever the result we will respect the democratic verdict, the British people will have spoken."
We will all pull together and ensure that David Cameron stays as prime minister and continues to deliver all the reforms and policies which he was elected with a majority on, just a year ago.
Cameron or Johnson? Gove seems hesitant
When asked if he was now closer to Boris Johnson than David Cameron, Gove stumbled before he said he "wouldn't want to choose between them".