The striker's progress has stalled since his January arrival from Athletico Paranaense.
But Deco told Jijantes: "It's normal... when there's no football, there are news in the media.
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"Without matches for 10 days it's difficult, the Blaugrana generate a lot of news. I won't share anything about our plan here, we plan it behind closed doors."
Deco continued: "The objective at the beginning of the championship was about winning it. We always have to fight to win, but if we can't do it, then we have to try to finish second.
"The debate on squads, entries, exits and Financial Fair Play is internal. We must not expose these matters in public.
"There are a few people responsible for football: the president, Xavi and me. If it doesn't come from any of us, I don't know where these things come from."