The Kansas City Chiefs (4-0) remain uncertain on the extent of star receiver Rashee Rice‘s right knee injury, according to Adam Schefter of ESPN. After undergoing an MRI Monday, additional tests are required to determine the full extent of the injury, as well as a recovery timeline. No answers are expected until next week, Schefter noted. Rice was initially feared to have suffered a torn ACL in Sunday’s 17-10 Week 4 road win over the Los Angeles Chargers (2-2). CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! Rice sustained the knee injur…