Few thoughts on some above comments reference Joseph Noteboom......
JN has never played any OG position in College. He was a pure OT. Not one scout said ever thought that JN was to be considered to be anything other than a OT & primarily an LT.
The negatives on JN were....
somewhat passive style...Not much aggressiveness or any sort of mean streak.....never really tries to impose his will when blocking.... lack of punch ......lets defenders get into his body,
It sure appears to me that it was a mistake for Kromer to try to turn the over 6-5 thin lower hips/ thighs & calves into a starting NFL OG something totally different from playing on the exterior. His body type screams OT & built far more the speed smaller quick right outside Edge rushers the NFL will line him up with.
JN had surgery about a month & half ago. His knee was mostly reconstructed. Why would we expect JN to be ready for training camp & preseason? Not realistic.....
I would imagine that it more reasonable time table is to expect that JN will join the team on the practice field about bye week 2020. So a starting LT will need to be found for OTA's/TC/ Preseason & the first half of the 2020 season.