Boss Arteta confirmed that the defender is contention to be involved at the Estádio José Alvalade. He said: "Everybody in the squad is fully fit and available to start the game. We have Kieran Tierney after a long injury, it’s great news that he’s back, he’s been training with the team and he’s at the level to participate."

Arsenal manager Mikel Arteta has confirmed that Declan Rice is fit to play this week. The Gunners are set to take on Sporting CP in the Champions League group stages. After a decent start to the campaign, the Gunners are stuttering slightly domestically and in Europe.

Kieran Tierney appears to be edging closer to a long-awaited return to the Arsenal first team. According to Isaan Khan of the Daily Mail, the Scottish left-back has been named in the Gunners’ squad for their crucial Champions League clash with Sporting CP tomorrow.

He's been training with us and he is available to participate." Tierney has not played for Arsenal since a substitute appearance in their penal

Kieran Tierney appears to be edging closer to a long-awaited return to the Arsenal first team.According to Isaan Khan of the Daily Mail, the Scottish left-back has been named in the Gunners’ squad

Tierney has now been in full training with the team for the last week, following his recent return to fitness. But this will be his first appearance in an Arsenal squad since his