'They're one of 21' - Ireland under-17s boss O'Brien highlights importance of collective mentality 

The importance of the squad, especially in the Doha heat, will be evident before the end of the group stage. 

Republic of Ireland head coach Colin O'Brien at Dublin Airport ahead of the Republic of Ireland under-17s flight to Qatar. Pic: Seb Daly/Sportsfile

Colin O'Brien and his 21-strong Republic of Ireland under-17 squad have been getting accustomed to life in Qatar over the last few days. 

It'll be Ireland's first time competing on the world stage at this age group, and O'Brien and Co. have witnessed the professional nature of such since they first touched down for the expanded 48-team tournament.