Tyrann Mathieu only signed with the Chiefs a few weeks ago -- but he ain't afraid to speak his mind about his new teammate, Tyreek Hill ... saying he's very disappointed after hearing the disturbing audiotapes.
The Honey Badger appeared on SB Nation Radio when the topic turned to Hill ... who was expected to be one of the focal points of the K.C. Chiefs offense in 2019.
But, the Chiefs have suspended the star WR in the wake of audiotapes which recorded Hill arguing with his fiancee, Crystal Espinal, about the child abuse case involving their 3-year-old son.