4 biggest pain points 49ers will have entering training camp

No. 1: 49ers’ shaky interior of the offensive line

This is a fact: San Francisco is experiencing a 40-percent turnover for its offensive line from a year ago.

The 49ers bid farewell to Pro Bowl left guard Laken Tomlinson in NFL free agency, then watched fellow Pro Bowler Alex Mack retire just before mandatory minicamp, opening up a void at center.

Perhaps the Niners accounted for Tomlinson’s departure, now hoping to plug in their second-round NFL Draft pick from 2021, Aaron Banks, into the veteran’s stead. But the plan to replace Mack was either hastened by a full year or was centered around getting unforeseen production out of perennial journeyman backup, Jake Brendel.

Related Story: NFL.com is still worried about 49ers’ center situation

Sure, San Francisco can feel modestly good at tackle with perennial Pro Bowler Trent Williams on the left side and returning-from-injury pro Mike McGlinchey on the right.

However, the inside of the O-line is shaping up to be a patchwork unit. And in light of this group carrying over some depth problems from a year ago, albeit ones that were hopefully addressed by the 2022 draft pickups of linemen Spencer Burford and Nick Zakelj, it’s probably premature to assume this group will impress amid all the concerns.

Probably not the best scenario for the 49ers to deploy in training camp as they make the transition to Trey Lance.