Quote Ferocious Aardvark="Ferocious Aardvark"That can't be right.  Why would we ever sign a raft of players on the basis that we do have to pay their wages, but they can never set foot in a competitive game?   
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Bates/Brooks didn't develop as planned? Davies/Petersen training stats didn't match their youtube highlights reel? quota?
You get 3 or 4 months with them before the first competitive game of the season.
An early injury then squad reassessment means you're  suddenly surplus to requirements?
If for example you're on £40k for the season, but 6months have passed and you've not played, then the opportunity arises for the coach to sign 2 players about April/May time, both on £20k for the next 6months.
 The £40k player is effectively benched, taken off the 25man squad that the RFL hold and unless he gets a loan arranged, is going to be paid without playing. 
Or maybe I'm just overanalysing this....