Doctor Sam?

Strangely no-one has mentioned Big Sam as being in the frame to take over from Matt Smith as the Doctor in Doctor Who. After all, WHU already has links with the BBC via The Apprentice. Big Sam would surely make a fine irascible Doctor, chewing gum as he hollered at Matt Jarvis to reverse the polarity of the neutron flow. After all, he's good with stats and knows all about perception and reality. And Arsene Wenger often accuses him of taking football back in time… The way he argues with fourth officials would certainly scare the Daleks. And how about Karren Brady as his note-taking companion?