It’s really simple - quota space!

Plus we do not need two dummy half running hookers, direction is what we need, Lunt offers that

Can loan players play against the teams they are on loan from?

Quota space for who?

Lui's going to be wearing number 40, which reflects the loan status of Tui. I'm guessing the 6 (or 7?) shirt will be Lui's next season.

Who knows, remember Parcell was signed for next season so its not just about this year

That’s upto the 2 teams involved

Whoever may be lined up for now or next season as Parcell is contracted to end of 2020.

Would be nice of the Sezer rumour is true and it is happening now.

In a change to the usual protocol, Leeds have asked to include a clause in Lolohea's Salford contract, insisting that he plays against us

I’m not sure of the rules here. It looks like we’ve effectively got Parcell off the books for 2020 - imagine if HKR stay up he’ll sign for them then. If not then then either another SL club or Aus maybe.
However that would mean that we had no extra overseas spots available for 2019 technically, as Parcell is on loan but contracted to Leeds.
If I’m reading this right, another overseas player would have to be shifted (properly) in order for us to add Sezer or any other overseas heritage player.
This might be it for 2019.

Pete smith confirmed that they are loan deals with no intention to return.

That reading doesn't make sense. If it did you could sign 20 overseas players on loan and none would count on quota as they'd stay on the quota of their 'parent' clubs.

Surely the quota applies to whichever club holds the contract of employment? Or are the players registered with the loaning club and the quota works on that?
Don't forget HKR couldn't move for Parcell until Vaivai had re-contracted to Toulouse first. So I think it is the contracting parties that count - and therefore I think we couldn't bring any more overseas players in without another swap deal or without somehow terminating the contract of an existing overseas player (so we pay Cuthbo off and he retires through injury, for example).

But you're arguing that parcel is quota for kr and Leeds aren't you? Otherwise how does his loan require vavai to leave and yet his leaving hasn't freed up a spot for us?