I don't know the answer to your original question, but I can't imagine any recruit doesn't know about GG by now - every time his name is mentioned in the sports pages, it says he will play for Texas.
I'm not sure if they can by name but every year someone says they will only recruit 1 QB or 1 RB. So, the second guy must be told we are only recruiting 1 QB/RB (like with Russell Shepherd this year). It is obviously implied that there is already a guy at that position on board.