Boston Celtics center Kristaps Porzingis is expected to remain sidelined for Games 1 and 2 of the Eastern Conference finals next week, but there’s optimism he’ll be able to return sometime in the series — barring any setbacks, sources told ESPN on Friday.
Porzingis has been making progress in his recovery from a soleus strain of his right calf, ramping up his on-court activity for an…