Despite his complete lack of experience in the division, Cosmi immediately won hands down Serie D, leading Arezzo back to professional football.

A new club with the Associazione Sportiva Dilettantistica Atletico Arezzo denomination was entered in Serie D.[2] In November 2010 the club was acquired by a consortium of Rome-based entrepreneurs (including popular actor Luca Zingaretti) for a sum of €400,000; the new owners immediately made a number of changes, appointing former Cagliari player Maurizio Coppola as head coach and former Serie A star Abel Balbo as assistant coach and technical area coordinator.

[3][4] On 1 July 2012 the club was renamed Unione Sportiva Arezzo[5] with Balbo as new head coach, replaced since 30 October 2012 by Michele Bacis.

[8] After the club ended in third place, Ezio Capuano was named new head coach; later in September 2014, Arezzo was readmitted to Lega Pro to fill a vacancy.

For the 2016–17 season, the club came with a new head coach, Stefano Sottili, and a number of major signings such as former Serie A player Davide Moscardelli.

Highest scoring and best win: Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.