Gary Hetherington come out and said that the loan signings from the Rhinos won't be there next year, so if we want Kienhorst, we may have to sign him, which would suggest a fee, which would suggest he won't be with us next year?
The only other option is of course that Mrs Hetherington tries to work some magic?

It's only been implied. He hasn't been charged with anything.
And the doping agency is being heavily criticised for the way they have just included everybody with no proof.

I don't know whether it's even a rumour that we sign him but I'd have no issue with it because of the Cronulla drugs case.

Innocent until proven guilty?

Do clubs still have to have 6 players from their own academy in the squad or have the powers that be quietly dropped that requirement. Webster has said several times that he's looking to have a squad of 24 or 25. I now make the squad 25 with only 4 from our academy? If we have to a have 6 would the other 2 be Tom Johnston and Corban Kilday?

It is 7 according to the rules
At the time of notification in any season of the Provisional First Team Squad and First Team Squad and following any amendments during the season, a Club’s First Team Squad, where that Club is in Super League, must consist of

In the list on this thread there's Annakin, Trout, Jowitt, Crowther and Johnstone's already signed someone earlier said. 5 so far, so I'd guess a couple more at least will make the move up.