$25NL hand

[ffcowboy76]

Here is a hand from a recent session I played on FTP. I'm posting this to get people thinking of what his range might be and what you would do on the river based on that range. I will post the outcome after a few days of discussion. I plan on posting more hands like this to discuss odds and ranging players.

Full Tilt Poker Game #16836429842: Table Older - $0.10/$0.25 - No Limit Hold'em - 22:00:26 ET - 2009/12/15
Seat 1: xiexz ($25)
Seat 2: ffcowboy76 ($27.45)
Seat 3: GraceCR ($5.10)
Seat 4: Preacherman08 ($30.38 )
Seat 5: cippycip ($25.09)
Seat 6: Heritage0 ($13.75)
Seat 7: mjn88 ($8.38 )
Seat 8: ShooterZP ($23.40)
Seat 9: RadiantAngel ($33.62)
GraceCR posts the small blind of $0.10
Preacherman08 posts the big blind of $0.25
The button is in seat #2
*** HOLE CARDS ***
Dealt to ffcowboy76 [9d 9h]
cippycip has 15 seconds left to act
cippycip calls $0.25
Heritage0 folds
mjn88 folds
ShooterZP folds
RadiantAngel folds
xiexz folds
ffcowboy76 raises to $0.75
GraceCR folds
Preacherman08 folds
cippycip calls $0.50
*** FLOP *** [5s 6d 8d] Pot : $1.85 - minus rake
cippycip checks
ffcowboy76 bets $1.25
cippycip calls $1.25
*** TURN *** [5s 6d 8d] [3d] Pot : $4.35 - minus rake
cippycip checks
ffcowboy76 bets $3.50
cippycip calls $3.50
*** RIVER *** [5s 6d 8d 3d] [4c] Pot : $11.35 - minus rake
cippycip has 15 seconds left to act
cippycip bets $3.75

What do you do? What do you think he has?