Tournaments / Leagues

Hi
in the Transfers section, in my opinion it is a good idea to now have a filter for “Tournaments”.
For me the name itself is a little disturbing, I'd rather call it “Leagues”, to be distinguished from real tournaments like WC or OG - but this just as a side note.
The feature itself is very good.
But not there are older transfers that are not (yet) associated with one of the Tournaments/Leagues.

As a normal user, can I do that somehow ? (I would volunteer to to some cleanup)
Also, if a transfer is marked as rumor. What would I have to do, to bring an evidence to verify it ?

Thanks.