Dimitar Berbatov returned to Manchester United on Thursday to train at Carrington.

The former Red Devil is currently a free agent and has returned to Manchester to build up his fitness and observe Jose Mourinho's training techniques with plans to one day move into coaching.

Berbatov posed alongside former strike partner Wayne Rooney at United's AON training complex and shared it to his two million fans on Facebook.

Dimitar Berbatov was back at Carrington with former United strike partner Wayne Rooney

Berbatov spent four seasons at Manchester United and has returned to build up his fitness

The striker spent four seasons at Old Trafford and was a popular figure, scoring 56 goals in 149 appearances for the club.

Berbatov won two Premier League titles with United, as well as the League Cup and Club World Cup, before leaving for Fulham in 2012.

The Bulgarian international is said to be on the lookout for a new club having last appeared for PAOK.

Berbatov, who turns 36 in January, was released by the Greek club in the summer.

The forward also enjoyed two years at Tottenham before his £30.75m move to the Theatre of Dreams.

Berbatov and Rooney celebrate one of the Bulgarians 56 goals for the Red Devils