Real Madrid set to rebrand stadium

Real Madrid president Florentino Perez announced this week that the club are in talks over a naming rights deal for their Santiago Bernabeu stadium, and along with the name change Los Blancos are planning to remodel their ground also.
Perez spoke about the remodelling plans on Spanish TV, saying:
We want to award the project later this month. There are four candidates for the improvements, and if they hurry up then we’ll see if by the summer we can start work on what will be something very emblematic for the 21st century Bernabeu.
Four designs have been submitted for the Santiago Bernabeu remodelling tender, and now images of those proposals have been made public.
Below are pictures of the four options for Real Madrid’s new home ground.