We are already over the budget at the moment and a big part of building is coming. It was expected, the only thing we don't know is that if it's mostly due to inflation or corruption, probably both. It's estimated it will be 1,2 or 1,3 billion instead of 960 million.
The good news is that there are rumors that Grada is finally returning against Atletico.
Barca chose Limak despite having the lowest technical third party evaluation because of two reasons : 1- lower financial demands but most importantly 2- Limak guaranteed to Barca a maximum budget (despite contingencies), the other two megabuilders didnt guarantee. Thats why Limak won.