The deal won’t be inked until Scotland’s involvement in the European Championships is over but it sounds as though the terms of a sizable pay increase – he’ll earn around £110,000 a week – have all but been agreed.
Tierney signed for the Gunners from Celtic for £25 million two years ago and, despite a number of fitness issues, he’s established himself as a key component of Mikel Arteta’s squad and a potential future captain.
The left-back has made 62 appearances, scoring three goals and making nine assists.
In addition to tying down Tierney, Arsenal are understood to be looking for reinforcement in his position. Sead Kolasinac, who spent the second half of last season at Schalke, is expected to leave permanently this summer.