Listening to that maybe something like:

Watkins

Briscoe
Handley
Moon
Hall

Sutcliffe
McGuire

Bailey
Aiton
Singleton
Walters
Achurch
JJB

R.Ward
Kirke
Mulhern
S.Ward

If Watkins and Briscoe play surely it's best to keep them together.

We all know that the squad for the final will be
16. [TBC]
17. [TBC]

So the question is, who gets those three bench places? We want 2 props and one back rower.

Available props: Bailey, Kirke, Achurch, Singleton, Mulhern

Available back rows: S.Ward, Clarkson, Achurch, Sutcliffe, Walters

Given Singo is the nearest thing we have to Kylie, I'd strongly back him to start. Leaving one place for a prop. Achurch & Bailey are of questionable fitness, and we're expecting JP to do 60+ minutes, so we don't need to risk someone not fully fit. Kirke most likely, maybe Bailey.

Back row is most difficult, think Sutty is first in line here - has that X factor and ability to do something with ball in hand that Ward seems to have lost. Achurch if he's fit is probably worth it, Walters has also done enough to justify it.

so I'd expect the three remaining bench spots to go to Singleton, Kirke/Bailey and Sutcliffe.

I can see Sutcliffe missing out at Wembley, and those three bench spots going to Bailey, Kirke and Achurch.

Still, missing out on a Cup final as a teenager didn't do Sinfield any harm.

Well, we're resting more than "one or two"

1 Zak Hardaker
3 Kallum Watkins
5 Ryan Hall
9 Paul Aiton
14 Stevie Ward
16 Ryan Bailey
17 Ian Kirke
18 Chris Clarkson
19 Mitch Achurch
20 Tom Briscoe
21 Liam Sutcliffe
23 Brad Singleton
26 Elliot Minchella
28 Josh Walters
29 Robbie Ward
31 Ash Handley
32 Ben White
33 Ashton Golding
34 Jordan Lilley

The squad announced today

1 Zak Hardaker
3 Kallum Watkins
5 Ryan Hall
9 Paul Aiton
14 Stevie Ward
16 Ryan Bailey
17 Ian Kirke
18 Chris Clarkson
19 Mitch Achurch
20 Tom Briscoe
21 Liam Sutcliffe
23 Brad Singleton
26 Elliot Minchella
28 Josh Walters
29 Robbie Ward
31 Ash Handley
32 Ben White
33 Ashton Golding
34 Jordan Lilley

As predicted key men rested

I suspect Hardaker and Watkins will drop out of that with Aiton or Bailey given the captaincy.

It's going to be some effort to get a result at London with that squad IMO. Fingers crossed. Having lost to Bradford, I think we need to get a win at London.

would you select Aiton on the bench or at all or go for size or an extra back rower?

Think how hungry London will be to just to get a win on the board.

It says in the article that the backline will be

Hardaker
Briscoe Handley Watkins Hall

I hope they've put Handley and Watkins the wrong way round there. The Watkins/Briscoe axis needs more game time, not less.

Aiton on the bench is a close call for Wembley. I would want Sutcliffe on the bench as utility cover and at the moment I think Singleton has earned the 3rd prop spot. Aiton has put in some good tackling stints as a back rower but for the Final I would be tempted to not to pick him as we have others that can share the acting half back role should Burrow get injured. So I would go with either Stevie Ward or Walters and one from Achurch/Bailey/Kirke based on their performance against London.

Much will depend on the weather forecast as if fine and dry we may want a bench that has speed and mobility rather than size and power as Cas will perhaps spread it wide at Wembley particularly if they are without Huby and Millington.

However I think Brian Mac will stick with experience and having Aiton come on from the bench at 9 allows Burrow to go roaming.