The 49ers revealed Thursday that Samuel suffered a Jones fracture in his left foot while training with teammates earlier this week, ESPN's Nick Wagoner reports.
Per the report, Samuel's injury -- which will require surgical repair -- entails "a break between the base and the middle part of the fifth metatarsal of the foot." While Ian Rapoport of NFL Network previously suggested that Samuel "should return within 12-16 weeks," a timetable that would presumably result in missed regular-season action for the wideout, ESPN's Adam Schefter offers the more optimistic take that Samuel is expected to be available for Week 1 action. Supporting that notion is that Matt Maiocco of NBC Sports Bay Area relays that Samuel believes he'll be back in 10 weeks.