Dicey river raise?

[rigoletto]

Party Poker 30/60 Hold'em (10 handed) converter

Villain is a very loose player (VLP). He is agressive preflop, but plays more passively post and calls to much.

Preflop: Hero is Button with 7[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, MP1 :#A500AF(VLP)/ calls, <font color="#666666">1 fold</font>, <font color="#CC3333">MP3 raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">2 folds</font>, MP1 :#A500AF(VLP)/ calls, MP3 calls.

Flop: (10.50 SB) 7[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
VLP checks, MP3 checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">VLP raises</font>, MP3 folds, Hero calls.

Turn: (7.25 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">VLP bets</font>, <font color="#CC3333">Hero raises</font>, VLP calls.

River: (11.25 BB) J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">VLP bets</font>, <font color="#CC3333">Hero raises</font>...

[mantasm]

His play doesn't seem consistent with a draw. I don't know why a passive player would stop stop and go go with a club draw or T8, so I'd say his weird behavior on previous streets makes this a raise. My guess would be something like J9 that paired his kicker, a one pair hand or a total bluff.