Its also worth noting though that at United, he's had Rooney, Nani, Valencia and Giggs putting them on a plate for him all season. Here, his supply would be tosh in comparison. He'd obviously not reach the same sort of figures, but it'd still be nice to have a good finisher around the club who doesn't have underlying fitness issues. He'll end up back in Germany for me though, still at a top European club like Dortmund.
As for working hard, its not everything. Its great if they do but its not the be all and end all, Henry at his pomp was one of the laziest players i've ever seen, but i don't think any team would've turned him away. Berbatov isn't lazy, not in the true sense of the word, i've seen him work his socks off for United in games, in terms of tracking back etc, he's just temperamental and that breeds inconsistancy.
On the other side of the coin, Dickov was a workhorse and he was/is boss.