KQo in BB

[Shammu]

Hello all,

$115 live tourny, 100 players down to 19, top 10 get paid. I have about 22,000 chips blinds are 600/1200 300 ante. I am about average chips stack. I was dealt KQo in BB, everyone folded to sb who made it 5000, I have played with him since the start of the tournament and at first he was very aggressive but has tightened up as we got close to the money. What would your move be?

I forgot to mention that he has me covered.