Fleur's Curse Breaker Training
"I have some artifacts similar to this. If you will allow me to cast a spell on you, we can see if you are truly bound by an unbreakable magical contract to compete."
"Sure, anything to get out of this bloody tournament"
Fleur cast a mage sight charm on herself, followed by diagnostic spells on both Harry and the Goblet of Fire.
"There are indeed four people linked to the Goblet as competitors, but Harry is not among them. It seems, however, that Professor Moody is. The three of us are connected, but not bound. Since Moody is bound, I would guess that he tried to force Harry's name in under a fourth school. He intended to enter Harry into a contest with four champions, but magic is not so easily fooled, and he ended up being bound himself. We are not bound, since it was our intent to enter a contest with three champions, so the selection of a fourth champion invalidated the magical contract."
The next day...
"Harry, when I examined you, I saw some things that were very out of place and quite worrying. This is Gerald Delacour, my cousin and the man who trained me in curse breaking techniques over the summer, and I've asked him to look over you to confirm what I suspect."
Gerald waved his wand at Harry a few times before muttering "It's even worse than you thought, looks like it's a good thing Amelia Bones accepted my invitation to perform a diagnostic ritual, several of these will definitely need the attention of law enforcement."