Re-hiring Massa would make perfect sense for Williams, whatever anyone else on here seems inclined to say. He offers continuity and experience and he can still do a job. At a time when Bottas to Williams is looking like a strong possibilty people should remember he never exactly destroyed Massa as a team-mate. Bottas had probably a clearer advantage over him in 2016 but they have been fairly even during their entire time as team-mates, and of the two it was Felipe who came closest to winning a race.
All this Good-Riddance-Felipe-stuff is getting really tedious and symptomatic of this age of tiresome automatic cynicism that's become the norm in all areas of social media, I think. He'a won several GP's, been a WDC contender and been involved in some memorable moments of GP racing and although he's probably no longer in his peak years he can still definitely do a good job given a decent car. Not too many drivers can claim that.
williams are obviously much better-placed to assess just what he offers them than those armchairs specialists who claim they'd be making the worst possible choice in re-hiring him.