The problem is that things change all the time. It's the exact reason why when everywhere is reporting something, the club don't actually confirm until the moment all the contracts are signed and and fully registered.
i know of at least half a dozen transfers in the last 10 years or so that have been talked about as fact on here (and other places) but fallen through at the last minute for whatever reason.
The best way to treat 'ITK' info is like gossip until it is actually confirmed. Judge it for yourself based on how likely it is and how strong the source is, etc. Don't get your hopes up and get excited until the club themselves comment, because they won't do so until there is something tangible.