Arsenal must sign a midfielder to compete with midfielder Thomas Partey, according to former Tottenham star Jermaine Jenas.
Mikel Arteta's side have enjoyed a fruitful start to the campaign, leading the Premier League with 21 points ahead of reigning champions Manchester City.
After scoring the opener in Arsenal's 3-1 triumph against rivals Spurs on Saturday, Ghanaian international Partey contributed a vital performance in the engine room.
In only his second match back after a thigh problem, Partey was subsequently named player of the match by Gunners supporters following his impressive display in the North London derby.