Board Thread:Naruto Discussions/@comment-44455926-20191124065748/@comment-32685487-20191127210255

Jiraiya has knowledge of the Sharingan for sure. Itachi himself has knowledge of Jiraiya too though, later when they were leaving the village Kisame turns to Itachi and pretty much says he knows Itachi could have beaten Jiraiya even though Itachi said otherwise. Kisame admitted Itachi and Jiraiya were each stronger than him, Orochimaru admitted Itachi was stronger than himself too and didn't make a single mention about his arms or having a better body he just flat out says Itachi is stronger and he can't take his body and that is why he aims for Sasuke instead. For Itachi, Kisame and Jiraiya mind you.. at this time fusing with Samehada, Sage Mode, and Susanoo/SoT/YM were not made yet.