Sergio Aguero has scored 13 goals in 16 games this season but suffered an injury against Chelsea. Photo: Andrew Yates/Reuters

LONDON – Manchester City striker Sergio Aguero will be out of action for "a few weeks" because of a thigh injury, manager Pep Guardiola said Monday.

The 31-year-old has scored 13 goals in 16 games this season but suffered the injury in the weekend win over Chelsea.

"(He will be out for) a few games, I don't know exactly," Guardiola told reporters. "It will be a few weeks, exactly how many I don't know.

"He has a tendon problem in front, so it will be a few games out."

City play Shakhtar Donetsk in the Champions League on Tuesday and Guardiola said Aguero will struggle to make the local derby against Manchester United on December 7.

City can win Champions League Group C by beating Shakhtar. Photo: Carl Recine/Reuters

"I don't think so, maybe we have a miracle but I don't think so," he said.

"We will miss Sergio, we have had some problems with injuries but we will wait for him and meanwhile we have Gab (Gabriel Jesus) and (Raheem) Sterling who can play in that position. We will live without him for a while."

City can win Champions League Group C by beating Shakhtar but the Premier League holders trail leaders Liverpool by nine points in the domestic title race.

DPA