Next Tuesday, both Ian Johnston and Carmel Napier will be questioned by an influential group of MPs on the circumstances surrounding her exit from Gwent Police.
The Home Affairs Select Committee says it will take oral evidence from the Gwent Police and Crime Commissioner, and then the former Chief Constable.
Gwent PCC Ian Johnston, asked by the panel if he would have done anything differently over the exit of Carmel Napier, said "no, to be honest."
He said the documents leaked to the South Wales Argus, which showed she was told to retire or be removed from her position, were "not leaked by me or my office" - but that there will be no investigation into how they were leaked.
The commissioner will offer a preferred candidate and a second choice for a replacement Chief Constable - the panel will not be involved in interviewing a successor, but will have a veto in the confirmation process.
Gwent PCC Ian Johnston has told the local panel that oversees him that "Gwent Police is in a better place without the Chief Constable".
He said he gave feedback to Carmel Napier in weekly meetings, but "you can only try so many times."
"We have the evidence ready if we go to judicial review."
Earlier this month, the Police and Crime Commissioner admitted he told her to retire or be removed from her post.
Police and Crime Panels were set up alongside the Police and Crime Commissioners last November - to oversee and scrutinise the PCCs. In Gwent, it is made up of local councillors and two independent co-opted members.
The panel is today "seeking further information" from Mr Johnston about Mrs Napier's exit.
The row over Carmel Napier's forced exit raised questions about the role and powers of Police and Crime Commissioners.
The creation of the posts was controversial - and just 14 percent of people turned out to vote in Gwent last November.
Gwent's Police and Crime Commissioner will be asked to explain the controversial forced retirement of the force's Chief Constable later.
Ian Johnston will attend a meeting of the Gwent Police and Crime Panel.
Earlier this month he revealed he told former Chief Constable Carmel Napier to retire or be removed from her post.
Newport West MP Paul Flynn says the row over the forcing out of the former Gwent Chief Constable by the force's Police and Crime Commissioner shows "it is the system that is wrong - it's going to happen elsewhere too."
He said the problem is "two people thought they were running the police force".
Ms Napier has called on the UK government to consider whether the independence of operational policing could be compromised by the power given to PCCs.
Carmel Napier has issued a statement in which she says "the timing of her retirement was not of her choosing.
The former Gwent Chief Constable says the government must consider whether legislation around the powers of Police and Crime Commissioners to call for chiefs to retire or resign "adequately protects the independence on operational policing."
Gwent's Police and Crime Commissioner has responded to widespread criticism, after it was revealed he told the force's former Chief Constable to retire or be removed from her post.
Carmel Napier retired last Friday.
The story emerged in document leaked to the South Wales Argus.
Caerphilly MP Wayne David said Gwent PCC Ian Johnston's actions were "totally unacceptable", while Newport West MP Paul Flynn said it constituted "bullying."
Mr Johnston has now issued a statement admitting he "raised my concerns" about Mrs Napier's performance, and saying she then chose to retire, a decision he accepted.
"Had Mrs Napier not made the decision to retire, I intended to take the matter further, which may have resulted in her being asked to leave the force", he said.
You can read Christopher Salmons draft plan on how he aims to combat crime as Dyfed Powys' Police and Crime Commissioner by clicking here
The PCC for Dyfed Powys is unveiling his plan to tackle crime across the patch. Christopher Salmon will publish details of his vision to tackle crime later today. The plan sets out six key priorities to keep people safe, improve trust and save money.
It sets out the direction of police work for the next five years.