Whistleblowers must be given proper support so they have the courage to come forward, the chair of the Commons Public Accounts Committee has said.
Margaret Hodge revealed six out of 10 people would not speak out over fears of reprisals from bullying colleagues.
She told ITV News there must be tougher government sanctions against this so it does not have a detrimental effect on uncovering scandals in the future.
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The FA have suspended Joey Barton from "all football activity" for 18 months after he admitted a misconduct charge in relation to betting.
Wednesday's showdown in Parliament could be the last time the pair face each other across the dispatch box.
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