Former Celtic defender Kieran Tierney has every faith in the Bhoys to get the job done against Rangers on Sunday in a massive Scottish Premiership derby. The Bhoys know defeat is not an option at this stage of the season and are up against it versus a Philippe Clement side who have had increasing confidence as the campaign rolls on. Tierney has been there and done it at Celtic, with many of the same personalities who will be leading the team out onto the pitch at a hostile Ibrox this weekend. The Arsenal star, on loan at Real Sociedad, remains a massive supporter of the reigning champions and …