Think it will be 2 new guys plus Maffeo. So if Heinrich and Probably a Left back. I'm guessing Bernat or Grimaldo.
Or it could be Heinrich and Fabihno based on links plus Maffeo as the 3rd.
Heinrich, Maffeo and Grimaldo would be perfect, with Fabinho coming in as a midfielder who can play RB if Pep wants him to.
That would give Heinrich, Maffeo & Fabinho as RB options. Grimaldo, Heinrich and Kolarov as LB options.