49ers mailbag: When to panic over Trent Williams’ absence?

SANTA CLARA — Time for the 49ers’ first mailbag of training camp, and although submissions come in these days via social media, let’s dedicate this episode to my neighborhood’s retiring mailman, Harold:

When is the time to panic about the Trent Williams situation? (@BD49ers)

The season starts Sept. 9 against the New York Jets, late into that Monday afternoon (5:15 p.m.). This needs to be resolved much before then, however. It’s not that Williams vitally needs practice reps ahead of his 15th season.