I trust that you guys have experience and know what you're doing, but I'm still not convinced. If BloodyEagles is not managing these teams, there are two alternatives: either he knows managers of other teams IRL and convinced them to make illegal trades to try to help his team (improbable when the trades involved many other teams from many other countries). The other alternative is that all of those massively overpriced trades were legitimately made by some other buyer. Since there is absolutely no reason that even a new player with no understanding of the game would covet one of those players enough to spend hundreds of thousands of $$ on one of them, then it seems way too improbable to be a coincidence. Both of these theories are possible, but the simplest, most logical solution is that he simply created all of these teams himself, and has avoided confirmed detection by whatever cheating tools and GMs are assigned to his case. As someone who formerly multi-accounted on the advice of an IRL friend who did in fact operate teams in multiple countries, I know for a fact that it is possible to create and operate many different teams for years without detection.
I'm not trying to criticize you or suggest you don't know how to do your job, but no system's perfect and people are always coming up with new ways to game the system. How else would you explain the prolificness of these transfers if you think they were not intentionally made to transfer money from other teams to BloodyEagles?