#4 - Leonardo Bonucci
Signing a defender is a top priority for Real Madrid while Barcelona are also keen on signing one in the summer. Leonardo Bonucci has been in top form for Juventus and is on the radar of both the clubs.
Pepe's contract at Bernabeu expires in the summer, and he's set to leave the club. This leaves Madrid with just Sergio Ramos and Raphael Varane, and so, Zidane is interested in signing the Italian defender.
Javier Mascherano and Jérémy Mathieu are set to be sold in the summer, and the Catalan side wants to sign an experienced centre-back in the summer. Bonucci impressed against the Blaugrana in the Champions League this season, and he's been on the radar ever since.
Juventus are not interested in selling the defender, but with bids of £60 million reportedly ready from both sides, the Italian champions might end up selling him. The Serie A side will try to get around £70 million for the defender who's rated as the best in the world right now.