I can see why they think an OL taken day 2 doesn't start right away. Likely not. Though I think Ezra Cleveland could have been a smart (longer term) selection at 52. But if they think Havenstein returns to form- and IF he does- there is a ripple effect there (Evans to guard? Etc.).
That said, today they would be smart to take an interior OL at 126. Could Bredeson or Stenberg beat out Corbett at LG week 1? Probably not. Quality backup with 2021 starting potential? For sure. Same with Biadasz at center.
Allen being on the roster as their 8th OL right now does ZERO to prevent them drafting interior OL in the 4th round today....