Right now, the 3rd and 4th OTs (Noteboom and McLendon) are the starters, with zero experience behind them.
Since the 3rd Guard (Noteboom) is starting at OT, the 4th Guard (Thomas, Bruss or Leveston) is starting at LG.
Avila could be moved to LG but then McAllister or Limmer start at C; and, neither has ever played an NFL snap.
Yes ... a veteran OT makes a ton of sense ... at least for the next month.
Best case scenario is that all three injured starters are ready for Detroit. If so, the vet OT could be released.