Nope sorry, Valanciunas is a center. A great talent sure, but you're asking him to learn a new position while also learning the American game, that's not putting him in a position to succeed. Fire your international scout, you meant to draft the other Lithuanian rookie.
Also, in two weeks I'm going to kill you with your own posts about keeping players at their positions.
KG at center 4 life.
Kid is 19 and has played both positions for years. We expect growing pains but he can play both positions. Our international scouts are doing a great job, thank you.
And if in two weeks you are killing me with I told you so's, I'll be good with that because it means I am in the playoffs. As I see things, that's a good thing. 
Not I-told-you-so's more like you-told-me-so's.
AI2 is not a SF
KG is not a C
Paul Pierce is not a SG
LeBron is not a PF
Scola is not a C
Valanciunas is not a PF - THE Walker Wiggle wuz here.
Playing these players out of position....and I mean this without insult... is just plain dumb.
But ribbing aside, I'll concede that Jonas has played some at the 4. But I don't have to like him there. I suspect he has a foot speed disadvantage at the 4 in the NBA as opposed to the 5. He's better defensively at the rim than on pick and rolls, and neither he nor Gortat has enough of a perimeter game, create spacing issues for the Rockets offensively.
That said, I'm having trouble establishing whether he's true 7 footer or a Dwight Howard 6'9 in lifts, which might help your case.
(Full disclosure - I've already made a trade offer on the guy.)