Sebastian Coe is expected to snub the request to reappear before the Culture, Media and Sport select committee by the end of this month after "some doubt" was cast on evidence he gave to British MPs in December 2015 about corruption within athletics' world governing body.
The decision to recall the International Association of Athletics Federations (IAAF) president to parliament followed Tuesday's testimony from Dave Bedford that, in the words of one MP, "undermined" Coe's answers to the CMS panel.
Bedford, a former London Marathon director and chairman of the IAAF's road-racing commission, spent 90 minutes answering questions on warnings he gave Coe in 2014 about senior officials at the IAAF allegedly blackmailing Russian marathon runner Liliya Shobukhova to cover up positive drugs tests.
"He (Coe) said that he was unaware of the specific allegations until they were broadcast in the ARD documentary (December 2014), but David Bedford's evidence casts some doubt on this"
In a statement issued to Press Association Sport on Tuesday, CMS committee chairman Damian Collins said: "From what David Bedford said to us today it would seem that he spoke to Lord Coe on two occasions about the case he had submitted to the IAAF ethics commission, as well as sending him emails and text messages.
"As we conclude our inquiry on doping in sport, there are understandably questions that arise for us about this, and in particular the level of knowledge that Lord Coe had about the serious allegations that had been made.
"We know that Lord Coe forwarded David Bedford's email to (IAAF ethics board chairman) Michael Beloff, and it would also appear there was some communication between them before he did so.
"David Bedford's purpose in getting in touch with Lord Coe was not to ask him to do that, as the evidence had already been submitted. He clearly felt that Lord Coe needed to know about the allegations that had been made.
"We are interested to know what Lord Coe knew and when. He said that he was unaware of the specific allegations until they were broadcast in the ARD documentary (in December 2014), but David Bedford's evidence casts some doubt on this."
Collins added that the committee would like to see the full email exchange between Coe, a former Conservative MP, and Beloff, and not just the screengrab the IAAF has released of Coe forwarding Bedford's email about the Shobukhova scandal to the ethics board boss.
The IAAF, however, has issued a strong rejection of the idea Bedford's testimony contradicted Coe.
"Today's evidence has offered nothing new to the committee's inquiry into 'Combatting Doping in Sport'," it said.
"All information including the emails central to their questioning (on Tuesday) were sent to the committee chair in June 2016 and acknowledged. Based upon this Coe has no further information he can provide to the inquiry.
"As we have previously confirmed, Coe's number one priority was to ensure that the right people in the right place were aware of any allegations and were investigating them.
"This was confirmed when his office forwarded the emails to the man Coe trusted the most, Michael Beloff QC, the chair of the then recently established IAAF ethics commission, receipt of which Beloff acknowledged."
This would appear to suggest the double Olympic 1500metres champion does not intend to comply with the committee's request and, as a member of the House of Lords, he cannot be compelled to do so.