Chelsea and Manchester City are both willing to pay the £13 million buyout clause for highly-rated Valencia left-back Jose Luis Gaya. The 19-year-old Spaniard is Real Madrid's first choice to fill the left side of their defence next season. But AS reports that both Chelsea and City are keen to snap Gaya up, with the Manchester club the most interested as they consider him to be a suitable replacement for Aleksandar Kolarov. Jose Luis Gaya celebrates after scoring for Valencia against Espanyol in the Copa del Rey in January . Gaya (right) charges forward past Atletico Madrid midfielder Gabi during a league match last month . Manchester City defender Aleksandar Kolarov (right) challenges Lionel Messi at the Nou Camp last month . The Serbian defender is keen to return to Italy after starting just 11 Premier League games for City this season. Gaya is a key player for Valencia, having played 27 league matches this season, and the third-placed La Liga club are putting together a second offer to renew his deal after the first was rejected. Gaya is a Spain Under 21 international, though he was forced to leave the camp last week after suffering a hamstring injury. He is hopeful of being fit for Valencia's crucial league clash with Villareal at the Mestalla on Sunday. Gaya in action for Spain Under 20s during a World Cup match against France in Istanbul in 2013 . Gaya (right) keeps close to Elche's Dutch forward Garry Mendes Rodrigues last month .
Jose Luis Gaya is wanted by both Chelsea and Manchester City .
The Premier League clubs are willing to pay his £13m buyout clause .
Left-back Gaya, 19, is also the subject of interest from Real Madrid .