#4 Leonardo Bonucci (AC Milan)
It was just at the start of this season when Leonardo Bonucci shocked the world after joining rivals AC Milan from Juventus. However, if the recent reports are to be believed, the Italian defender is regretting his move, given the Rossoneri's disappointing form. Milan are 7th in the league -- 23 points behind his league leaders Napoli.
At the start of the window, the player was reportedly interested in switching clubs with Chelsea rumoured to be his favourite destination, according to the Daily Star.
Bonucci has emerged as the better option on paper in comparison to Raphael Varane. The Italian has averaged 1.65 interceptions compared to the Frenchman's 1.2 in the league. Also, the 30-year-old has been better aerially, winning 1.6 aerial duels per game in contrast to the 24-year-old's 1.2. He has also won 0.9 tackles per game in comparison to Varane's 0.8.
With the prospect of facing PSG in the Champions League in mind, Zidane would do better by signing Leonardo Bonucci and shoring up Madrid's lacklustre defence.