I've spilled one previously, which was the dossier he was central in putting together in 2012, that saw Walton disappear to the USA and Mason removed from our games for a while. It also saw Mike Riley come up to the Etihad to do the Q&A with Points of Blue.
Another was passing on key information that the club only partly acted on in the 2019/20 season. Had they acted fully, it's quite possible Liverpool wouldn't have won the title. They did act on other Liverpool-related information but it's something I suspect they already knew.