Arsenal have failed with an opening offer for Celtic fullback Kiernan Tierney.

The Sun says they've had an initial £15million bid for Tierney KO'd — and have been told the price starts at £25m.

The Gunners tried to tempt the Hoops by offering fringe players such as Carl Jenkinson, Jordi Osei-Tutu, Emile Smith Rowe or Eddie Nketiah as part of the deal.

The Scottish champions are open to the possibility of selling the left-back.

But their valuation of the 22-year-old would have to be met to justify letting go of a fans' hero.

Sources expect Arsenal to try again with an improved bid within days.