Three years, three Euro failures: What now for Ronaldo and Juventus?

Juventus suffered an evening of agonising déjà vu on Tuesday.

The Italian champions’ last-16 second leg against 10-man Porto provided enthralling entertainment for the neutral. But after 120 minutes of breathless action, the outcome was another early Champions League exit for Juve.

Their elimination by Olympique Lyonnais at the same stage last season effectively cost Maurizio Sarri his job, while a year earlier Massimiliano Allegri’s side were beaten by underdogs Ajax Amsterdam in the quarterfinals...