The California State Athletic Commission is taking “very, very seriously” a recent interview from Wanderlei Silva , who on Tuesday said he suffers from concussion symptoms. “We’re going to have to make sure he’s neurologically fit to go,” CSAC Executive Director Andy Foster today told MMAjunkie. “If fighters say things like this in the press, we have to follow up. He’s welcome to fight here if he’s medically cleared.” In 2016, the CSAC implemented neurological testing using the iPad-based C3 Logix system, which uses neurocognitive data to assess potential concussions and overall brain function.