I would agree that LG is the most immediate priority to replace, but we can continue to disagree about Foster. He is serviceable at best but many of the failures in short yardage were as much him failing to move his man as Kemo or Legursky.
There is a reason that no one signed Foster or Legursky as a RFA even though they would have essentially not had to give up any compensation in return. They just aren't that good. We have just become so numb to bad OL play we accept what they do.