The 29-year-old has scored 17 goals this season, and his club confirmed last week that the Blaugrana are interested in signing him when his contract runs out in June.
In a live Facebook chat for Eurosport, Ben Arfa denied having already put pen to paper with the Catalans.
"I have not signed for Barcelona," he said.
"There is a lot of noise, but I would prefer not to talk about my future.
"The most important thing is the end of the season."
Nice trail Monaco by two points for the final Champions League spot heading into the final week of the season, but Ben Arfa said that a third-place finish would not influence his decision.
"Whether or not we qualify for the Champions League, my future is not decided," he said.
In a live Facebook chat for Eurosport, Ben Arfa denied having already put pen to paper with the Catalans.
"I have not signed for Barcelona," he said.
"There is a lot of noise, but I would prefer not to talk about my future.
"The most important thing is the end of the season."
Nice trail Monaco by two points for the final Champions League spot heading into the final week of the season, but Ben Arfa said that a third-place finish would not influence his decision.
"Whether or not we qualify for the Champions League, my future is not decided," he said.
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