Most people here were very surprised about his selection. He's an offensive left back but still have a long way to go.
But maybe in the future he will be an option.
I think the coming years Vertonghen will still have to play on the left back position! If he'll become better than Pocognoli. i'm not sure about that. He also has a different personality than his brother.
Although I agree that with a CB partnership of Vertonghen & Kompany our LB options aren't that great ... I'd still prefer 2 CBs that are awesome and one of these guys as our starting LB:
Vermaelen, Lombaerts, Pocognoli, Van Damme, De Bock (best prospect?), Vermijl (RL), De Laet (RL), Cavanda (RL), Tshimanga, Verboom, Lukaku ... De Laet has impressed me at RB lately and should be comfortable at LB too ... his versatility could be interesting ... use him as a starter now and when one of the younger guys steps up his game, he can remain as a squaddie.
IMAO J.Lukaku will be at or near the bottom of that list ... he could improve seeing that he's still young, yet I doubt that he'll reach the level you'd expect from a decent international.
PS our FBs won't magically appear ... Goethals would have played to our strengths (many many many many good CBs ... Denayer, Bossaerts, etc. will get there too) ... he'll tell me how little I know about football ... regardless I'd experiment with a flat back three (Alderweireld, Vertonghen and Vermaelen) with Kompany in front of them ... when needed he can drop back next to Vertonghen (pushing Alderweireld to RB). The Godfather of Belgian Football used to play with 3 CBs ... wasn't that part of our way of playing?