His twitter bio is literally "Occasionally right, occasionally wrong, occasionally 'informed' opinion and Blue."
He IS a journalist. His track record IS proof that he has got nuggets of "Inside info" pretty consistently over the years. Like any other journalist he knows only what he is told.
His track record also shows that he is pretty far away from being the most reliable in getting fed info on how far along transfers are. But it is completely relatable that a City fan with connections gets giddy if he hears good news. His threads on here over the years has been great fun, and will hopefully continue. But people should be smart enough to seek out what they are 100% confident in themselves.