Agüero was forced from today’s Champion’s League tie at Barcelona with a hamstring injury at half-time. The forward saw only six touches in the first 45 and with no initial word of the injury, the move appeared to be a tactical decision, but the news of the injury came later. City assistant manager Ruben Cousillas said “Too early to know how long [Agüero] will be out. We don’t think its serious. He felt pain, it was more a precaution.” Aguero will head for more tests to determine the severity. Stay tuned for updates.