Murphy's competitive debut for his new side could come in the Champions League third qualifying tie, with Celtic draw with Sporting Braga hours before his transfer was completed.

BBC: Sunderland striker Daryl Murphy signs for Celtic

The teenager has certainly pressed his case of late, with exceptional performances against Sporting Braga, Tottenham and Partizan Belgrade suggesting he is ready for arguably the biggest test of Arsenal's season against the champions at Stamford Bridge.

BBC: Jack Wilshere ready to shine for Arsenal and England