Most sporting observers are now familiar with the ‘Allez Allez Allez’ chant that has swept Europe and crossed codes. Liverpool fans put their own lyrics to the old Italian disco hit on their run to the Champions League final last year, and fans of other clubs have also put their own slant on it. Last February, Letterkenny won the Trench Cup and one of their players, Ultan Doherty, coined his own version which paid tribute to his victorious team-mates. Egan saw the clip and a seed was planted. “They were at the back of the bus belting it out,” he explained yesterday, ahead of another double training session with the Ireland squad at the Campus in Quinta Do Lago. “And I just thought it would be class if we went up and we had one. “I was with my friend Anthony Forde – who plays for Rotherham – and I don’t know how I came up with them but I just came up with lyrics and he was like, ‘Yeah, you’ve got to sing that if you go up.’” Exploded When the underdogs successfully booked their place in the top flight, Egan grabbed the microphone at their end-of-year awards and…