The Brazilian is weighing up committing to Spain.
Del Bosque concedes it is not an easy situation for the 25-year-old, who has played twice for Brazil in friendlies, but believes a final decision will be made soon.
"We are going to have a conversation with him. He's expressed his desire to us and he's in a difficult situation because Brazil also want him and he has to decide. In the next few weeks he will decide," Del Bosque said on TVE.
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