The Bank of England says “nothing has changed” following contradictory reports on how long governor Mark Carney will remain at the bank.
“The governor has said he will make his decision public by the end of the year,” a spokesman told the BBC.
Mr Carney took over as governor in June 2013 for an eight-year term, but with an option to leave after five years.
The Times reported he is likely to quit in 2018, but the FT said he is “leaning strongly” towards staying until 2021.
According to the Financial Times, Mr Carney will make an announcement this week “to put an end to damaging speculation”.
Some believe the announcement could come on Thursday when Mr Carney will hold a news conference following the publication of the Bank’s Quarterly Inflation Report and the announcement of the result of its latest interest rate meeting.
The inflation report includes an assessment of how the economy is performing and its outlook.
Given that the economy has performed well since June, Mr Carney is likely to be asked about his forecast – made before the EU referendum – that a win for the Leave campaign could be damaging for the UK economy.
During an appearance before MPs in July he denied that the Bank of England had tried to “frighten” the public by predicting a negative effect from a Brexit vote.
Prime Minister Theresa May has also been critical of the Bank’s stimulus scheme for the UK economy – know as quantitative easing, or QE.
In her speech to the Conservative Party conference, she said that under QE, “people with assets had got richer, people without them had suffered”.
Many politicians have made it clear they would like Mr Carney to stay on, arguing that it would provide welcome continuity for business and the economy and may help counter any uncertainty caused by the Brexit negotiations.
Speaking to the BBC on Sunday, Business Secretary Greg Clark said: “I think Mark Carney has done a tremendous job, a fantastic job, during his tenure there. It is clearly a decision for him.”
Mr Clark was financial secretary to the Treasury when Mr Carney was appointed by the then Chancellor, George Osborne, in November 2012.
“I think it was a brilliant appointment,” Mr Clark said.
Former Conservative business minister Anna Soubry has also expressed support for Mr Carney.
“Swift effective measures by Mark Carney mitigated post-EU referendum damage to our economy,” she said in a tweet.
“Brexiteers should stop undermining Mark Carney; we’re fortunate to have someone of his international standing at the helm.”
Kathleen Brooks, research director at spread betting firm City Index, said that if Mr Carney did confirm he planned to stay on until 2021 it was likely to benefit the pound, which has fallen around 20% against the dollar since the Brexit vote.
“If this story is true, then it is a beacon of stability during a period of uncertainty for the UK economy, which should benefit the currency and stocks alike,” she said.