AK facing reraise early

[Roman]

300$ sng on PS. Opponent is aggressive, but really good and a big winner. His reraise OOP scares me. Comments?

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) converter

MP2 (t1950)
Hero (t1480)
CO (t1630)
Button (t1180)
SB (t1460)
BB (t1500)
UTG (t1380)
UTG+1 (t1500)
MP1 (t1420)

Preflop: Hero is MP3 with K[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t80</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">BB raises to t240</font>, Hero ??

[Roman]

woops wrong forum, can someone move this?