There was an article stating that this could be the start of Central contracts, and with Jack without a club contract he could be the first for the rfu.
But I wonder if players would want it.
Especially while Eddie is in charge, very few are guaranteed of being in the England squad so I'm not sure how that would work.
When signed to a club, a player would get their club salary and the England top up.
A central contract would likely need to be a serious amount to be worth it for the players