The Brazil international caused a stir when he claimed earlier in the autumn that he will be moving to England when his current deal expires at the end of the season.
However, his agent has since made it clear he would like to stay at the club should talks over new terms become promising.
And, although he admits there has been no concrete decision, Zubizarreta says discussions with the player are planned.
"We've done nothing in that respect," he told AS. "We're talking about the contract with him. We'll see what the road is we'll take. It's also influenced by the decision of Fifa [the transfer ban].
"The best thing is that we come to see an incisive Dani, that's important."
Zubizarreta is also adamant there have been no offers for forward Pedro, despite reported interest from the Premier League.
"There's nothing in my office and we've not put him on the market," he said.
Full-back Douglas was signed during the summer as a potential successor to Dani Alves, but Zubizarreta has warned not to expect too much from a player who has just left the Brasileirao.
"Sometimes we have to sign people less well known. He's an interesting player because he gives us options in attack and is good in defence," he added.
"But, coming straight from Brazil, the leap is not easy."