Dana Stubblefield's attorney says the woman accusing him of rape is NOT mentally disabled and absolutely has the ability to give consent to sex ... and he says they can prove it.
As we previously reported, prosecutors say the accuser has a "mental disorder and developmental and physical disability" which prevents her from being able to give legal consent to sex.
Stubblefield was even charged with rape with someone incapable of giving consent.
But we spoke with Ken Rosenfeld who tells us ... it's just not true.
In fact, Rosenfeld says the woman has a criminal history and has accepted plea deals in the past -- and judges wouldn't have let a mentally disabled person do that.