7. Samuel Eto’o - RCD Mallorca to Barcelona ($29.70m)
After getting rejected by Real Madrid, the player went on to be a club icon for FB Barcelona and Inter Milan. He scored a magnificent 130 goals in 199 games and won the Treble in the 2008/09 season winning Champions League, La Liga, and Copa del Rey.
One of the biggest bargain in the history of La Liga happened when Germany International Toni Kroos joined Real Madrid from Bayern Munich. Clubs didn't wanted him and then he somehow closed the deal with Real Madrid in the transfer window.
6. Toni Kroos - Bayern Munich to Real Madrid (€27m)
5. Sergio Ramos – Sevilla to Real Madrid ($29.70m)
Spanish defender Sergio Ramos was a really crucial part of Real Madrid. And under him, the club went to become the best. Sergio Ramos succeeded Iker Casillas as Real Madrid captain in 2015.
4. Karim Benzema - Lyon to Real Madrid (€35m)
Another brilliant striker in La Liga, Real Madrid signed Karim Benzema from Lyon in 2009. But it took nine years for him to get in the limelight. The Frenchman became the main man of the squad after the departure of Cristiano Ronaldo and now he's the Ballon d'Or winner.
3. Luis Suarez – Liverpool to Barcelona ($89.89m)
Luis Suarez has been indulged in several talks regarding who's the best La Liga striker and more. But in his prime, Luis Suarez was just exceptionally. He's surely among the top signings done by FC Barcelona in the 21st century.
2. Cristiano Ronaldo – Manchester United to Real Madrid ($103.40m)
When Cristiano Ronaldo joined Real Madrid, a lot of things changed and we saw the best version of the Portuguese striker. He left the Spanish Giants after nine years becoming the highest scorer of the club.
1. Raul – Atletico to Real Madrid (free transfer)
One of the greatest Spanish football players to ever step on the field was Raul. He spent 16 years with Los Blancos, scoring 323 goals which rank him fifth on the all-time scoring La Liga list behind Ronaldo and Messi.