Celtic have reportedly rejected an opening bid of £15 million from Arsenal for full-back Kieran Tierney, but the Gunners are optimistic a deal will be made.
Per BBC Sport's David Ornstein, negotiations with Celtic are ongoing, while it is believed the Gunners and Tierney should easily agree to personal terms:
David OrnsteinAs reported elsewhere Arsenal have had an opening bid of £15m for Celtic left-back Kieran Tierney rejected - but there is optimism an agreement will be reached between the clubs, while personal terms for the 22-year-old Scotland international shouldn’t be a problem #AFC #CelticFC
This article will be updated to provide more information on this story as it becomes available.