#2 Dani Parejo
Dani Parejo is one of the few highly talented players that Real Madrid should never have sold. He featured prominently in Los Blancos' B team and scored 10 goals from 33 appearances during the 2007/08 season. His impressive displays at Castilla inspired the then first team manager, Bernd Schuster to call him up to train with the seniors.
However, he only managed to appear 5 times for the first team after being loaned out to Queens Park Rangers (QPR). Madrid then sold him to Getafe for just €3 million. His Getafe career was a success and this led to Valencia purchasing him for €6 million.
Now, Parejo is one of the best midfielders in La Liga. He has consistently delivered outstanding performance for years. A complete package, the 29-year-old scores goals and provides assists, while also contributing significantly in defense. Looking at Madrid's horrible midfield situation currently, Parejo surely could slot anywhere in the center of the park.