#3 Martin Ødegaard
Martin Ødegaard was signed from Strømsgodset in 2015 for a fee of £2.52 million at the age of 16. He played for Real Madrid's Castilla team for around two years before being sent out on loan to Dutch club SC Heerenveen in the Eredivisie.
During his time there, Martin has generated some laudable performances. Still only 19 years old, he has contributed to two goals and four assists in 29 appearances so far for the club. This season he's managed 1.8 key passes and 2.8 dribbles per game, whilst maintaining a pass accuracy of 82%.
Given that Real Madrid recently extended their contract with him until 2021, it's fairly certain that Martin Ødegaard features in Real's future plans and given his steady development, you wouldn't count him out at having a successful stint with Los Blancos.