Raphael Varane: B+
At the end of the Jose Mourinho era it appeared as if Raphael Varane had kicked Pepe out of Real Madrid's starting line-up.
However, last season, due to an injury, he was forced to play back-up to Pepe and Sergio Ramos in Ancelotti's side.
Now fully fit and on the back of a World Cup with France, it is time for Varane to start realising his potential.
If he can kick on from that form he found in the first half of 2013, he could soon be considered among the best defenders in the world, rather than one of the best young defenders in the world.
Sergio Ramos: A
Sergio Ramos is loved by some and loathed by others, but it shouldn't be forgotten how important he has been to Real Madrid and the Spanish national team.
One of the most decorated players in European football, the former Sevilla man is an all-action defender.
Playing with his heart on his sleeve, Ramos can tackle, head and is a constant threat from set plays as well—both in terms of aerial prowess and the ability to take free-kicks.
Unfortunately, he can be rash and does make the odd mistake, but he's only human and Madrid wouldn't swap him.
The mileage that Madrid have got out of Pepe and Ramos has been impressive.
The duo have been the club's undisputed pairing at the back for several years now and helped Madrid to Champions League, Copa del Rey and La Liga success in that time.
However, Pepe is growing older now and has Varane waiting to jump into his boots.
The Portuguese centre-back is still important, but he's not as important as he was once—he's also got a bit of a nasty streak.
Nacho Fernandez: C+
As far as fourth-choice centre-backs go, Nacho Fernandez is a nice option for Carlo Ancelotti to have.
It doesn't feel like he will ever establish himself as starter at the Bernabeu, though.
His versatility helps—he can play anywhere across the back four—while it's appreciated by the fans that he came through the youth system, but he's lacking the ability to make it at a top club.