So sad in fact that they are planning to retire his number 22.
Malaga's owner Sheikh Abdullah bin Nasser Al-Thani confirmed the intention on his Twitter account by stating: "No.22 shirts will not be available to any other player at Malaga CF as a courtesy to the player Isco."
Retiring numbers for legendary and notable players has been a long-standing tradition in American sports that has crept into football in recent years.
In England for example, West Ham have retired Bobby Moore's number six shirt, while Man City have not used Marc-Vivien Foe's number 23 after he tragically lost his life on the pitch while playing for Cameroon.
However, retiring Isco's number seems like an odd decision for a number of reasons, such as:
A: He's still very much alive
B: He's only 21
C: He has played only 73 games for the club
D: He has only been at the club for two seasons
However, none of those reasons make it possibly the worst idea ever, but the fact that Malaga are set to lose a squad place if they retire Isco's number does.
Spanish football rules state that Liga clubs can have a maximum squad size of 25 players and the players must wear the numbers 1-25.
Thus, if Isco's number is retired, they will be down a player on every other club in the division.
You might have seen the odd number over 25 while watching Liga football but only players promoted from academies can wear these shirts, while Espanyol have also been given special dispensation to have one number over 25 after they retired captain's Daniel Jarque's number 21 when he died of a heart attack aged just 26.
That is the only known top flight number retirement in Spanish football but Malaga would not be able to afford such charity in the case of Isco.
Time to rethink his impact at the club we think.