Cosby was convicted on three counts of sexual assault back in April.
They called the idea "ludicrous" and "absurd."
Amber Guyger is charged with manslaughter for the death of her 26-year-old neighbor Botham Jean.
He faces a maximum sentence of 30 years.
After days of negotiations, the woman who accused Supreme Court Justice Kavanaugh of sexually assaulting her has agreed to testify before Congress.