Fold to river donk?

[Muckit]

Villain is 40/3.5/0.7 over 50 hands.

This is an easy fold to a LPP river donk bet correct?

PokerStars Hold'em (8 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, BB calls, UTG+1 calls.

Flop: (6.50 SB) 6[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, UTG+1 checks, <font color="#CC3333">Hero bets</font>, BB calls, UTG+1 folds.

Turn: (4.25 BB) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, BB calls.

River: (6.25 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero folds.

Final Pot: 7.25 BB