I read that the Adams trade is not officially complete yet. It could be for a reason like this.
Houston need shooters and Kennard would make a world of difference to the bench, particularly when Amen Thompson leads the 2nd unit.
Being a Houston fan, it's becoming increasingly obvious the need for not only shooting but a decent backup defensive minded big. Biyombo had been filling in really well for Memphis until they were repeatedly hit with the injury stick and realised this season may be a last cause.
Tate seems like just the kinda guy Philly would love, kind of like an even smaller PJ Tucker. Dude has fallen off a cliff offensively, but has always been a really good defender. Who knows, maybe he starts hitting shots spotting up from the corner (something that's baffling Houston doesn't seem to like doing).