Mark Vincent Kaplan says an agreement between the parents has not been reached yet.
Spears' "Circus" tour starts March 3 in New Orleans.
Kaplan says the boys won't attend the shows, but that Federline will try to make the children "available" to Spears on "pretty much the same schedule that she has now."
Spears has reportedly threatened to cancel the tour if she can't see the boys while on the road.
What the El!?! Editorial:
Sounds like the best plan, the kids join her at certain locations and she takes time to be with them. It could work.