"The lawsuit also alleges that Moon, 61, committed sexual battery by grabbing the woman's crotch during a trip to Seattle this year".
The report cites a lawsuit filed by a California woman who worked for Moon's sports marketing firm accusing him of multiple offenses.
The Seahawks did not immediately return a request for comment.
Haskell, 32, joined Sports 1 Marketing as an executive assistant to Moon in July.
Moon, 61, played in the National Football League for 17 seasons, mostly for the Houston Oilers. He is best known for his time quarterbacking the high-scoring "run-and-shoot" era of the Houston Oilers from 1984-93.
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While he won the Walter Payton Man of the Year Award in 1989 for his charity work, his actions in subsequent years paints quite a different picture of the man. But his reputation was later marred by scandals involving women.
Also, in 1995 he settled a sexual harassment lawsuit out of court with a then Minnesota Vikings cheerleader, according to a story from the New York Times, by Thomas George. After Moon was arrested, he called his reaction to their argument a "tremendous mistake". The couple divorced in 2001.
Moon co-founded Sports 1 Marketing in 2010 and serves as its president.
Three days later, Haskell reported Moon's behavior-the dress code, sleeping arrangements, touching, and unwanted sexual advances-to the company's CEO, David Melzer, according to the lawsuit.
Haskell declined to comment through her attorney, Diana Fitzgerald of Miami, Florida.
The Canadian Press does not normally name alleged victims of sexual assault, but Fitzgerald & Isaacson, the law firm representing Haskell, said its client had agreed to go public. He was charged, but later acquitted when his wife said she had provoked the fight.
She says in the lawsuit that "Moon had a dark and twisted side that commanded far more than just executive assistant services from his newly hired employee".