The Belgian is keen to return to the Spanish capital to be closer to his two children.
But the Champions League winners currently have four goalkeepers on their books and the manager will only talk about their positions until negotiations progress with the Blues keeper progress further.
"When it arrives or does not come, [then] you ask me," Lopetegui said.
“At the moment I am talking about the good game of Keylor [Navas], [Andriy] Lunin, Kiko [Casilla], Luca [Zidane].
“If we have another situation in the future, you ask me and I will tell you what I think about that topic."