Is Colton McKivitz a viable replacement for Mike McGlinchey?

Photo by Michael Zagaris/San Francisco 49ers/Getty ImagesThe prevailing thought regarding Kyle Shanahan’s offenses is that the tackles are more valuable than the interior. The 49ers investments along the offensive line reflect this.

We’ve seen the offense weather the storm in year’s past when Trent Williams, Joe Staley, or Mike McGlinchey missed time. The Niners have multiple decisions to make this offseason, and none loom larger than retaining McGlinchey.

If the team elects to save the money they’d use on their 2018 first round pick, NBC Sports Bay Area’s Matt Maiocco believes the McGlinchey’s replacement is already on the 49ers roster:

If McGlinchey next contract is deemed too expensive for…