49ers depth chart: Which starters could be replaced mid-season?

Starters on the #49ers’ unofficial depth chart who could be replaced during the season:

The 49ers on Tuesday released an unofficial depth chart ahead of their season opener vs. the Bears on Sunday. While the depth chart isn’t compiled by the coaching staff, it’s still an interesting look at what we can expect to see in the starting lineups Week 1.

We can also from there figure out which of those players are cemented in their starting spots, and which ones could eventually come up for grabs as the season moves forward.

One starter that jumps out right away is free safety George Odum, who’s in there as a fill-in for Jimmie Ward who’s on IR with a hamstring injury. He’ll miss at least the first four weeks, but we’ve not included Odum in our list since his play won’t dictate whether he’s starting. Ward will come back and start at the free safety spot even if Odum plays like an All-Pro through the first handful of games.

A slew of other names jump out though when it comes to players who might be replaced during the regular season.