There shouldn't be a need to, I agree. The OP seems to have forgotten that Burn will be back in Jan, and we'll have 8 HGP. Those 8 will be unlikely to change all season, so in January, we will not need to sign a HGP.
I was replying to the worst case scenario of us being short of CBs and if we...
He could in theory be recalled and go back into the first team if included as the 25th name...
This is the rule; - Players loaned to Football League clubs cannot be replaced, but can regain their spot on return to parent club.