Need more info. What's his stack? near the bubble? what type of aggro? Is he a whale aggro, or actually a solid aggro? Depending on this info I am either 4betting or folding. I'm never flatting here as I don't want to play OOP vs an aggro player with only 33bigs and no room to maneuver . You will have to fold flop way to often when you miss being only 27ish bb effective.