He's a centre. Henry Tuilagi is a No. 8.
A centre that probably won't fit into their backline. The halfbacks are established and won't be shifted, and with him, Adam Hughes, Ashley Smith and Tom Riley competing for the two centre spots, (Two of which I could see a potential internationals) and then if you shift Hughes or Tuilagi outwards, they're competeing with Aled Brew, Chavanga and Will Harries (Although he's still injured, I'm a big fan of his) with Harries, Martyn Thomas and Steffan Jones competeing for the 15 shirt. Strength in depth is great, but (Besides Brew, who's simply got to play for them) all of the others can be chopped and changed with relative ease, as there's not too great a class difference. (Aside from Harries on top form)