I think Day needs to go out and find another QB now. I don't think a transfer makes sense, a good transfer isn't coming in to sit behind Fields and possibly Baldwin. Also relying on transfers to replace depth is risky, it could set up the QB room to have a collape of depth when you deal with limited years and constantly having to recruit multiple QBs a year.
Day needs to see if there is a good high school QB who might not have the highest ceiling but will be happy to be a backup. Someone on the lines of Guiton or Cardale. Someone that should be with the team 4 or 5 years and can be counted on for spot duty. Maybe even compete to start in year 3 or 4 if they hit their ceiling.