Celtic 's manager was criticised for making an ear - cupping gesture as he walked off the field at Ibrox following the scoreless draw .
Neil Lennon has issued a vigorous defence of his conduct at the end of last Sunday 's Old Firm game .
Celtic 's manager was criticised for making an ear - cupping gesture as Neil Lennon walked off the field at Ibrox following the scoreless draw .
Neil Lennon has issued a vigorous defence of his conduct at the end of last Sunday 's Old Firm game .