I have some hope that maybe Saldiveri can step up at LG. The plan was for him to be the starting LG this year but he got hurt in camp and there was never any competition with Patrick. If Saldiveri is ready maybe giving it a week will give Patrick time to get ready to play Center until McCoy comes back.
But, if Saldiveri isn't ready, I'd be in favor of giving Hergel a shot. Udoh looks terrible at LG. Based on preseason Udoh is a better Tackle than Guard. Or maybe Landon Young will be back and play LG.
Another option would be to put Ruiz at Center, Patrick at LG and someone else at RG, but I don't think Ruiz even took snaps at Center in camp.