The Spanish defender believes Nolito is an extraordinary player but any decision has to be made by manager Arsene Wenger.
"This is a thing for the manager and the technical department," he told IBTimes.
"They are the ones who decide which players have to come.
"It is obvious that he is an exceptional player, with a lot of quality but we, the players, are only thinking about the coming games.
"I think he is a very good player. It is clear. He is doing really well with his team and with the national team but [his signing] is not a thing for the players."