The deal of the summer has finally been completed as Celtic star Kieran Tierney has signed for Arsenal.

The left-back has been at the centre of a summer transfer saga this year and Gunners boss Unai Emery has finally landed his man.

We told how Tierney, 22, was headed to London to complete the deal last night.

The player completed his medical this morning and signed a deal believed to be worth £75,000 per week at the Emirates.

More follows.