Celtic v Rangers: Scottish Premiership – live

Updates from Old Firm derby, midday kickoff (BST)Get in touch: email John about the gameIs it actually three at the back? Martin O’Neill, as ever, keeps it mercurial. “We’ve got the options for both - but I’m not sure we’re going to play three or five [at the back]. You’ll find out in about an hour’s time. For years I played three at the back with two wide players. But this is not exactly that system today.”Derek McInnes also spoke to Sky: “J