Celtic striker Leigh Griffiths is back to full fitness having been out of action since his appearance in the 3-1 win against Hearts back on August 25. The 29-year-old scored twice during Celtic Reserves’ dominant 6-0 win in a friendly against Stenhousemuir at Lennoxtown during the week, and he came on for the last 22 minutes of yesterday’s 4-0 Premiership win against Livingston. Griffiths’ return is a welcome boost for manager Neil Lennon as Celtic and Rangers engage in a neck and neck battle at the top of the Premiership, and former Celtic star and Sky Sports pundit Davie Provan hopes he can start firing on all cylinders soon.