Arsenal manager Mikel Arteta’s work has been outstanding since he returned to his old club in December 2019, and he has now signed a new contract. Arsenal have tied Arteta down to a new deal for the next three years after his impressive work helped rebuild the squad into one which is challenging at the top of the Premier League. Arteta and Edu Gaspar built a young squad using smart recruitment, and Arsenal broke several club records last season, as they scored more and conceded less than in any other Premier League season. However, Arsenal still fell just short of the Premier League title, and…