Looks like they've only loosened the noose as opposed to withdrawing it. It appears that we can sign 5 but the EFL has applied some stringent wage caps.
According to John Percy, of the 5 we're allowed to sign on strictly capped wages, Curt, Wis and Morrison are at the head of the queue.
I reckon Mengi could be #4.
No idea who the 5th will be.