I don't see much in that article that signals he's done with basketball. If he wants to go visit the team that owns his rights and maybe practice a little baseball, I say good for him. As long as they also fit training in, off-season is for the players to do their own thing, even if the situation is a bit questionable from our view. So, you won't see me blow any whistles on them. I'll give our Blazers the benefit of the doubt (until they show up fat when the regular season starts).
Also, like others in this thread have said, we have seen hardly any of Connaughton this season to see if he "belongs" in the NBA. It's too early to tell. I'll be looking forward to see how well he does this coming summer league.