[Closed] NL25FR RUSH valuebet river with a set?

Villain is playing 10/7 over 177hands. The question is simple - can we value bet on the river? I'm not worried about a six, but I'm slightly worried about a flush. Also there aren't many hands in his range that we beat and would call the river.

Hand converted with online PokerStrategy.com hand converter:

Play hand

$0.1/$0.25 No-Limit Hold'em (9 handed)

Known players:
[tg]BB$10.00:///////;UTG1$37.34:///////;UTG2$25.80:///////;MP1$28.77:///////;MP2$23.35:///////;MP3$5.91:///////;CO$12.50:///////;BU (Hero)$25.35:///////;SB$32.24:///////;[/tg]

Preflop: Hero is BU with 4:s, 4:h.
UTG1 folds, UTG2 raises to $0.87, 4 folds, Hero calls $0.87, 2 folds, BB folds.

Flop: ($2.09) 4:d, 8:d, K:s (2 players)
UTG2 bets $1.25, Hero raises to $4.25, UTG2 calls $3.00.

Turn: ($10.59) 5:s (2 players)
UTG2 checks, Hero bets $8.00, UTG2 calls $8.00.

River: ($26.59) 7:d (2 players)
UTG2 checks, Hero checks.

Final Pot: $26.59.