Barring a disastrous training camp from Alex Boone (fingers crossed), we can fairly easily pencil in the starting five on the offensive line. Additionally, Daniel Kilgore appears to be in line for the top back-up OL job. Nothing is set in stone, but according to my magic eight-ball, all signs point to this happening. The questions are what will happen beyond that as the 49ers will likely carry at least two more offensive line.
We don't have specific answers, but you could say the possible answers in a multiple choice question are starting to fill in. One unlikely answer is out of the picture as UDFA guard David Gonzales was reportedly waived. He was in a significant uphill battle, so this isn't a big move in the grand scheme of things, other than opening up a spot on the 90-man roster.
Although Joe Looney is on the PUP list for now, it looks like he'll eventually settle in learning the right guard position. He has spent the offseason learning both positions, but said he will focus on right guard when he gets off the PUP list. This isn't exactly surprising given that Mike Iupati is locked in at left guard, but it's interesting to note nonetheless. The 49ers are giving Alex Boone every chance to win the right guard spot, but if Looney emerges at 100% from his Lisfranc injury, it will be interesting to see what the long term future is at right guard.
Rookie offensive lineman Jason Slowey has apparently spent most of his offseason working at center, but is expected to learn a lot more about the two guard positions. He was a left tackle in college, but is a bit small for the tackle positions. He brings some solid athleticism to the center position, which will be tested over the coming month by a strong 49ers defensive line.