Now it's about their kids.

Alex Rodriguez is negotiating to see his two young daughters - because his estranged wife has made it difficult for the Yankee superstar to spend time with the kids while their marriage disintegrates, sources told The Post.

Cynthia Rodriguez "hasn't made it easy to see the children," said a source close to A-Rod, whose wife sued for divorce Monday amid claims he had a relationship with Madonna.

Full Article from the NY Post HERE.