I take it you mean "he hasn't"? I don't want to turn this into a defense of BF because I can't stomach the wee chav bastard but he had a few good seasons and one "great" one.
He is no longer good enough for the Prem, far less Newcastle. At any rate I can't see this transfer happening. When BF went to Blackburn he played a "Sectarian" card to justify moving (His kids getting abuse etc) then worked his ticket so hard at Blackburn (I want to get buried in my Rangers top and other such insincerities) that the circus surrounding the man would probably render it unworthwhile for all involved. Ferguson conducted himself with all the dignity of Kevin the teenager.
Also, the man is a coward, content to hide in midfield and blame others during the game, so I'm sure he'll just hide in Scotland.
Hopefully Ricky Sbragia will express an interest in the cuunt and spend £5m on him.