Deshaun Watson allegedly received massages from at least 66 women over the course of 17 months ... this according to a new investigation into troubling claims made against the Cleveland Browns quarterback.
26-year-old Watson -- who previously stated he hired around 40 different massage therapists during his five years in Houston -- is being accused of making sexual advances towards multiple massage therapists who are speaking out for the first time, according to the New York Times.
One woman -- who did not file a lawsuit or go to police -- claims Watson requested she put her hands "uncomfortably close" to his testicles as she worked on his behind and upper thighs .