LONDON (AFP) - Manchester City left-back Aleksandar Kolarov will be out for "at least one month" due to a calf injury, manager Manuel Pellegrini revealed on Tuesday.

"Kolarov has a muscle injury in his calf. He will be out for at least one month," the Chilean told a press conference ahead of City's Champions League home game with CSKA Moscow on Wednesday.

The 28-year-old Serbia international was injured in the warm-up prior to City's 1-0 Premier League win at home to Manchester United on Sunday, with Gael Clichy filling in.

He will miss City's next two Champions League games against CSKA and Bayern Munich, as well as Premier League matches against Queens Park Rangers, Swansea City and Southampton.

Eliaquim Mangala has returned to the City squad for Wednesday's game after missing the victory against United with a leg injury.