Neil Lennon has his worries over using Joe Ledley Neil Lennon is not planning to risk Joe Ledley in Sunday's Old Firm game at Ibrox. The midfielder will definitely miss tomorrow night's SPL game at Rugby Park with a hamstring injury picked up against Aberdeen in the Scottish Cup semi-final win at the weekend. And the Celtic manager has also all but ruled the Welshman out of the trip to Govan. Lennon said: "He is definitely out of tomorrow night and he is a huge doubt for Sunday. We don't know how long he is going to be out for at the moment. It is a niggle of some sort and the medical staff are still looking at it and trying to get to the bottom of it, to give us some guidelines. Hamstrings are a very delicate injury and it would be a massive gamble with the obvious chance of it tearing and him being out for the remainder of the season. It's a not a risk I would be willing to take on a player who has been very influential and who we need for the run-in."