Stephen Colbert may be CBS' top choice to replace David Letterman behind the "Late Show" desk, Mashable reports.
According to the site's sources, Colbert has not had any formal conversations about taking the position, but he is the network's first pick. CBS did not return HuffPost TV's immediate request for comment, but a rep told Mashable that the network had no comment. Colbert's "The Colbert Report" contract with Comedy Central runs through 2014 and Letterman announced that he will retire in 2015, which would make the timing ideal for both hosts.