NY Times says they have been told that,
Two specialist teams were on standby, probably on the aircraft carrier Carl Vinson in the Arabian Sea: one to bury Bin Laden if he was killed, and a second team of lawyers, interrogators and translators if he was taken alive

The Guardian says they have been told that,
a deal struck between former Pakistani President Pervez Musharraf and former US President George W Bush in 2001, paved the way for the US to conduct a unilateral raid inside Pakistan if they knew of Bin Laden's whereabouts.

The paper quotes serving and retired Pakistani and US officials as saying that under the terms of the arrangement Pakistan would "vociferously protest the incursion" after it took place.