Panthers placed FS Tre Boston (knee) on injured reserve, ending his season.
Tre Boston is expected to take over as a starting safety for the Panthers.
Tre Boston opened OTAs as the Panthers' starting free safety.
Panthers fourth-round S Tre Boston is being held out of OTAs after undergoing sports-hernia surgery earlier in the offseason.
Panthers signed No. 128 overall pick DB Tre Boston to a four-year contract.
Panthers selected North Carolina DB Tre Boston with the No. 128 overall pick in the 2014 NFL draft.