How 49ers can replace C Alex Mack

Sooo… how do the #49ers replace Alex Mack? Some internal and external options:

Alex Mack’s retirement left a sizable hole in the middle of the 49ers’ offensive line.

The team did little to address the center position in free agency and the draft, leaving them somewhat handcuffed at one of the offensive line’s most important positions with training camp quickly approaching. Having a quality center is vital not only for blocking, but for calling out protections and building a good rapport with quarterback Trey Lance.

San Francisco has leaned heavily on proven veterans at center over the last three years with Weston Richburg and Alex Mack. Now they may need to find a less-experienced answer internally.

Here are the internal options and a couple free agents still available: