I really don't think that spending all that money on a player who is 34 years old is going to be a good decision. Especially when they really need the money. Just think about this, getting this player obviously is going to get them better results but does it ensure them the La Liga title or maybe the Champions League title?
I don't think so and in my opinion, they are going to have a good result even without this player. Maybe if they don't get this player they will finish 4th and if they do get him they will finish second or third.
Every target of a team is to win trophies , this can happen by having quality players , that is why every team would want to spend money to get players that can make the team strong to win or end up with a good position. When a team performance is poor it affects the team financially and in other ways, that is why it is better to spend money to bring good players , the money that is been spent is not in vain if the club performs well.