Stars 11r Hand: JJ in late position vs table chip leader

[JFJB]

I do not have all information exactly but here it is.

Stars 10 rebuy $55,000 - Blinds are 200, 400 with 25 ante.

Vilain is MP1 with about T68,000 - Hero is CO with about T25,000

Folded to villain who raises to T2000, folded to hero who looks down at JJ. Hero calls. Button, SB and BB all fold. (pot is T4825)

Flop comes 4-7-9 rainbow. Vilain bets T1600 and hero raises to T4500. Vilain calls

Turn is K. Vilain checks and hero checks.

River is a 2 no flush possibilities. Vilain bets T10,000. What now.