Hamraoui is the Paris Saint-Germain footballer who was struck with an iron bar by masked attackers outside her home on November 4.
Police investigations into that attack are reported to have led to the discovery of a link between Hamraoui and Abidal, in the shape of a phone chip in Abidal's name being used by Hamraoui.
According to a widely referenced statement from Hayet Abidal's lawyer, Nicolas Cellupica, that was first released to the AFP news agency, the discovery of the phone chip prompted the former footballer to admit he had strayed.
The 42-year-old has now asked his wife to forgive him.
Hamraoui was a member of Barcelona's women's team when Abidal was director of football at the Spanish club from 2018 to 2020, and she moved to PSG in July of this year.
Abidal wrote on Instagram on Tuesday: "Hayet Abidal forgive me. Whatever your decision, you will remain in my eyes the woman of my life, and especially the mother of our wonderful children.
"I deserve this humiliation even if it kills me alive. El hamdouli'allah. An sha' allah one day you will forgive me."
Hamraoui is recovering from the attack for which her PSG team-mate Aminata Diallo was initially considered a suspect.
Diallo has since been released without charge, having strenuously insisted she is innocent of any wrongdoing as police investigations continue.
Hamraoui has not made a public comment on the claims she and Abidal had a relationship.
Coaches including Jose Mourinho, Fabio Capello, Zinedine Zidane, Carlo Ancelotti, Gareth Southgate and Fabio Capello have joined the 24-man UEFA football board, along with superstar former players Paolo Maldini, Luis Figo, Gareth Bale, Rio Ferdinand, Michael Laudrup, Philipp Lahm and Robbie Keane.
There is one non-European on the board, with Inter's Argentine vice-president Javier Zanetti joining a throng that also includes former Germany team-mates Rudi Voller and Jurgen Klinsmann, plus Netherlands boss Ronald Koeman, Rafael Benitez, Patrick Vieira and Eric Abidal.
The noticeably all-male board will hold its first meeting at UEFA's European House of Football headquarters on Monday.
European football's governing body said the group will "give an institutional yet independent voice of experience and expertise on fundamental football-related topics".
UEFA president Aleksander Ceferin said: "UEFA is delighted to see that the very ones who have shaped the game's history with their talents and philosophy through decades are gathered again around our common goal – to protect the game of football and its essential values. As we always say: football first!"
Ceferin is campaigning for clarity on football's handball rules, having recently described the law as "really obscure".
"No one understands it any more," Ceferin said. "So we really need a conversation here, finding solutions and clarifying some issues."
He said that would be an issue for the football board to look at, and it was confirmed on Thursday as being on the agenda for the meeting, along with discussions about the video assistant referee system, player behaviour and medical issues.
UEFA said its technical director and chief of football Zvonimir Boban would chair Monday's meeting, although he is not a member of the new board.
UEFA football board members: Jose Mourinho (Portugal), Carlo Ancelotti (Italy), Zinedine Zidane (France), Paolo Maldini (Italy), Fabio Capello (Italy), Javier Zanetti (Argentina), Luis Figo (Portugal), Philipp Lahm (Germany), Ronald Koeman (Netherlands), Gareth Southgate (England), Rio Ferdinand (England), Michael Laudrup (Denmark), Rafael Benitez (Spain), Roberto Martinez (Spain)
Predrag Mijatovic (Montenegro), Jurgen Klinsmann (Germany), Rudi Voller (Germany), Petr Cech (Czech Republic), Juan Mata (Spain), Robbie Keane (Republic of Ireland), Patrick Vieira (France), Henrik Larsson (Sweden), Eric Abidal (France), Gareth Bale (Wales).
