#2 Mario Hermoso
Former Real Madrid academy product, Mario Hermoso, joined Espanyol on a free deal in 2017. However, after proving to be a vital cog in Espanyol's squad, the Spaniard might be on his way back to his parent club, Real Madrid.
The 23-year-old solid defender is known to be the heir to Sergio Ramos - who is into the latter stages of his career. Along with being a solid defender, Hermoso is known for his versatility as he can be used both - as a centre-back and a left-back.
The arrival of the Espanyol star would provide more depth to Santiago Solari's side and also more rest to Marcelo and Sergio Ramos - who'll be needed fresh for the upcoming crucial games as Real Madrid would be entering the second half of the season - with more ambition to achieve and add further silverware to the cabinet under Santiago Solari.