Grebenkin (upper body) aggravated his injury and could miss the start of Flyers' training camp, per Jordan Hall of NBC Sports Philadelphia.
Grebenkin appears to have some lingering effects from the upper-body injury that kept him sidelined during the final stretch of Philadelphia's regular season and postseason run. Across 55 regular-season games, the 23-year-old winger contributed in a checking-line role, posting four goals, 14 points, 32 shots on net and 86 hits. If Grebenkin is set to miss the start of Flyers' training camp, he'll likely have to re-earn an everyday role amid the team's forward depth. His main competition for playing time will be Denver Barkey and Alex Bump.