HS2 chairman Sir Terry Morgan has confirmed he expects to be sacked.
Sir Terry has been quoted in multiple news outlets including the BBC and Sky News saying that he will be asked to leave the project within weeks.
His appointment to the £55.7bn rail scheme was only confirmed in August, while he has involved in the Crossrail project since 2009.
The move to head up HS2 in addition to Crossrail became mired in controversy after the £15.4bn London line was delayed by around nine months shortly after he started at the high-speed project.
It prompted criticism from former National Infrastructure Commission boss Lord Adonis, who said transport secretary Chris Grayling’s decision to have Sir Terry take up the same role at HS2 was “extraordinary” – particularly at a time when Crossrail was ”clearly failing”, he said.
Crossrail’s management has since come in for further criticism over the delay.
Last month mayor of London Sadiq Khan accused Crossrail’s management of a governance “failing” at a Transport for London board meeting, adding that he was “extremely angry” at how the delay to Crossrail was revealed.
The minutes also showed that Sir Terry had felt “huge disappointment” over the delay and for “letting people down”.
He used the meeting to explain of how the completion date for the £15.4bn line had changed so quickly.
Sir Terry told the meeting that in July, Crossrail had been confident of opening the line on time in December.
However, he said closer examination of delays to testing and infrastructure problems later in July and August meant the completion date would be delayed.
Sir Terry told the board that he had “considered his own position” following the delay, but had then decided he was “keen to continue” in the role.
The appointment as HS2 chairman was announced in July, making him the second ex-Crossrail executive to join the rail projects board after former CEO Andrew Wolstenholme became non-executive director of the £55.7bn project in March.
He replaced chairman Sir David Higgins, who left after two terms in the post.
HS2 and the Department for Transport have been contacted for comment.