CRISTIANO RONALDO has conceded in private that leaving Real Madrid for Juventus was a mistake, according to reports. The £88million transfer in July 2018 the winger speak of a “new challenge” as he looked to conquer Italy the same way he had Spain and England. In his first season in Turin, Ronaldo only won the Serie A and Supercoppa Italiana titles while this year has seen injury issues dog his and Juve’s form. But while the Old Lady are still a major threat at home and abroad, it is the individual accolades Ronaldo has always chased. Just last week, Lionel Messi beat the 34-year-old in the race to win six Ballons d’Or. And ABC in Spain report that Ronaldo feels his move to Juventus badly affected his chances of winning the gong.This year’s award may have been beyond him anyway given his goal record but he is said to be intent that the 2018 honour would have been his – were he still with Real. Such regrets have reportedly been communicated to friends and former teammates of Ronaldo. After going goalless in November, the forward has struck in both his last Serie A games as Juve nonetheless drop points in…