According to a league source, King sustained a hamstring injury during Thursday night’s game. His availability will be “week-to-week,” and the team will likely sign another quarterback to supplement the QB room in the short term. His play was the primary talking point after the fantastic preseason contest, which ended in a 33-30 Panthers’ win. Email newsletter signupThe Panthers are expected to sign former Buccaneers quarterback Kyle Trask, whom the Panthers hosted for a tryout last week, according to a league source. The Panthers entered the summer with four quarterbacks: Young, Pickett, King and Charlotte-area native Will Grier.