Manchester City striker Sergio Aguero is unavailable for his side's Premier League clash with Aston Villa, Manuel Pellegrini has confirmed.
The Argentina international provided an outstanding performance in last week's Manchester Derby, scoring twice as City inflicted a 4-1 thrashing on their arch rivals but suffered a slight injury with five minutes of time remaining.
The former Atletico Madrid star did not appear to be struggling but sat out of his side's 5-0 win over Wigan Athletic in their Capital One Cup third round victory, and will be rested again to ensure he has sufficiently recovered in time for City's Champions League clash with Bayern Munich next week.
"Aguero finished the last derby in the last play with a small pain, I think it was a risk for him to play three games in the same week," Pellegrini told a press conference.
"We will leave him for next Wednesday but he will be absolutely fine."
The former Real Madrid and Malaga coach also confirmed that David Silva remains unavailable. The diminutive Spaniard has missed City' s last four games with a thigh injury he picked up while on international duty earlier in the month, but could be fit to return for the visit of the Champions League holders.
City's win over United lifted them to third in the Premier League on goal difference and left a feeling of euphoria echoing around the Etihad Stadium. But with a potentially tricky fixture against an unpredictable Villa side, City's Alvaro Negredo insists derby day celebrations are behind them with the focus solely on the visit to Villa Park.
"Derby day was a very beautiful day for this club, we were very happy and it will give us a lot of confidence going forward but we have to put that to one side and concentrate on Villa now," the former Sevilla striker told City's official website.
"Villa are a good team with lots talented, young players and we will have to play at the same level we showed against United and Wigan if we are going to take the three points.
"But we are confident in our own abilities - we're doing fine, playing well and now the goal is to continue playing in this way."