West Ham have been monitoring Mosquera, who is a highly-rated 20-year-old centre-back from Valencia. Despite interest from several Premier League clubs including Liverpool, Chelsea, Tottenham, and Crystal Palace, Mosquera is reportedly leaning towards a move to RB Leipzig. His asking price is around €30 million, and sources indicate that the player and his representatives believe a move to the Bundesliga could be beneficial before potentially joining a top English club in the future.