Cardozo proven at European level, but around twice the price (and I'll bet they'd want it all up front) of the "unproven" Cornelius. Both 6' 4" and play the same sort of role.
Cardozo is 30 - Cornelius is 20. Do we want or need both? I'd take a shot at Cornelius for the potential.
If money were no object, maybe yes to both, but I'd prefer to be hearing about some reinforcements at the back. We are going to need some quality wing backs and at least another good CB to survive let alone push on up there.