At this moment it's all too new and there's still not much information about it but things stand like this for now:
Josep Maria Bartomeu i Floreta is Partner and CEO of the company ADELTE, which specializes in designing, manufacturing and building of global services in airports, sea ports, and also ground installations.
Currently they are expanding in Asia with already active projects in Taipei, Vietnam, and Hong Kong.
Evergrande Group on the other side, have this gigantic project called Ocean Flower Island and Guangzhou is one of the largest ports in Asia. Ocean Flower Island is an artificial archipelago targeted to luxury seeking tourists.
From what people are gathering at the moment, ACS (Florentino Perez's construction company) was also on public bidding for the project but finally it will be adjudicated to associates to ADELTE or (more likely) associates.