Here is my attempt to translate some of Castro's radio interview.
"I don't regret making the announcement. Over the weekend I had many calls from Vitolo and 18 kilometers of whatsapp messages asking us to accept Atlético's payments in installments, saying he did not want to come back to Sevilla. I told him that was impossible and that all of the media tactics were disrespectful to the club. I went out and said he had 3 years on his contract and a club would need to pay the release clause in full if they wanted him."
"He spoke with me and the vice president and afterwards we concluded that we could meet Atlético's salary offer. If you want to resolve this, then stay. He sent me messages saying he was happy. He asked me to defend him in front of the fans when he came to sign. He arrived and gave me his word that he would sign for five seasons for the agreed amounts and an increase to the release clause. We prepared the contract during the morning. We delayed the player presentations [Banega and Pizarro] to prepare the contracts with those figures. His father gave the OK. His agent too, by email. All that was left was to sign because he had to come. The player told me to make it public. We didn't do it [until later] because we wanted a document of acceptance from the father and agent."
"If you can't count on the word of a person who has been here, who we have given everything, well I don't know."
"We're not angry. We're indignant."
"Vitolo used us to extract more money from Atlético. He made us look bad, telling us to make public a deal he did not follow through on. He disrespected our club and our fans. He failed us as a person. The reality is that he urged us to fix a problem for him, and what he did was create one for us."