City's little Argentine went down on the pitch a little after his near-post finish past Howard equalized the game for the Citizens, before Dzeko scored a brace.
Before going down, the Argentine was dragging the Everton defence all over the final third, looking to be the biggest goal threat on the field.
The scorer of the extra time winner against QPR in 2012 eased injury concerns on Twitter, stating it was just a precaution.
“Thank you for your concern. I left just as a precaution,” he Tweeted. “Fortunately I'm fine, happy for the goal, the win and keeping our dream alive.”
The goal against Everton is his 17th of the campaign, the win putting the Sky Blues with their destiny in their hands.