Ex-Cincinnati Bengals safety Chinedum Ndukwe is suing a woman and her attorney claiming they threatened to lie and go public with a false sexual assault claim unless he paid her $10 million.
But, the woman's attorney says the allegation against Ndukwe is 100% real ... and he was the one who tried to buy her off in the first place.
Here's the deal ... Ndukwe -- who played in the NFL from 2007 to 2011 -- filed a lawsuit against attorney James Walker and his client, Jane Doe claiming extortion and coercion.
In his suit, the 34-year-old -- who now runs a real estate and development firm -- says the woman and her attorney sent him a demand letter earlier this month seeking $10 million or else she would file a civil suit against him and pursue criminal charges.