The Panthers will place right tackle Daryl Williams on injured reserve, Ian Rapoport of NFL.com (on Twitter) hears. The hope is that Williams will be able to heal up in time to return for the second half of the season. 
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Williams dislocated his right kneecap and tore the MCL in the same knee in late July. The tackle opted for rehab over surgery, but that path means that he’ll still need a fair amount of time to heal.
It’s a tough blow for a Panthers offense that will likely also be without guard Amini Silatolu to start the year. The Panthers will likely use Brandan Mahon or Tyler Larsen to fill in for Silatolu while 2017 second-round pick Taylor Moton figures to start in place of Williams.
Williams, a fourth round pick in 2015, will be a free agent after the season, so he has extra motivation to get back out on the field. The Panthers, meanwhile, will have to hope for the best while they’re without one of the game’s better tackles. Last year, Williams graded out as the 15th best overall tackle in the NFL, per Pro Football Focus.