Diaby's return to full fitness has lifted everyone at Arsenal this season.
â€śArsenal have always had fantastic midfielder players,â€ť Smith told talkSPORT. â€śAbou Diaby is one of them.
â€śAlthough he didnâ€™t have a great game last night [against Montpellier], heâ€™s a fantastic player.
â€śWith those long legs he can rampage through the midfield, heâ€™s a powerhouse. Diabyâ€™s had a lot of injury problems but if he can stay fit, heâ€™ll make a huge difference.â€ť