15th according to this
Could just be a typo, because I've also seen the 25th from a couple other local sources.
Either way, as someone who follows the Blazers and looking at their current roster/cap situation, I think it's more likely than not he'll still be here at the end of the month. He's playing on their Summer League team right now. The only way I see him released is if he suffers a serious injury or if another SL player not currently on the 15-man really surprises them in Vegas.