Rafael Nadal admits tension between Spain's Tennis Federation and the Davis Cup team will make it difficult to return to the World Group.
Nadal's uncle and coach, Toni Nadal, caused controversy when he questioned the decision to make Gala Leon the first female captain of Spain's Davis Cup team in September last year.
Leon later responded by saying "I'm not going to apologise for being a woman" following a meeting with some of Spain's Davis Cup team.
Current world number three Nadal responded by claiming that Leon was fuelling a "false and absurd" debate.
And the 14-time grand slam champion concedes that the situation is not ideal.
"There is a lot of controversy and a lot of people have said things that were completely untrue and it is difficult to say things about that," he said.
"But seriously it is not an ideal situation for anybody at the end, because when nobody is happy, when the federation is unhappy with the players, when the players are not happy with the federation, when no one is happy with anyone it becomes more difficult to make the right progress to try and be back in the World Group."
Spain, who last won the Davis Cup in 2011, are not due back in action until July when they will begin their attempt to return to the World Group.
And Nadal admits he does not yet know if he will be participating.
"We don't have the Davis Cup until July so it is difficult for me to say yes or no because I really don't know and, now, I really don't care much. I am worried about other things," he added.
"Things don't look very good - we have a tough rival in what will probably be Russia, but even if it is another we will be outside so it won't be easy, and even if we play with the best players from our country it will not be an easy confrontation."