Pellegrini, who has been banned for two games by Uefa for his comments made after defeat to Barcelona last week, has had to rely on Alvaro Negredo as his main man up front in Aguero’s absence.
Aguero has scored an incredible 26 goals in 25 games for City in all competitions so far this season and his absence over the past four weeks has been evident.
The Argentinean’s partnership with Negredo was vital to City’s fine form and that duo could be paired for City at Wembley in the Capital One Cup final tomorrow against Sunderland.
“It’s very important to have Sergio back with us because he is a very important player,” Pellegrini said.
“It [whether Aguero starts] is something I must decide tomorrow and see how he has recovered from the work he has done this week.
“I will be very happy if we achieve it [winning the cup] because I think it reflects all your work for the year.”