Lawrence and Kahdra are different players but both wildly inconsistent for me. Lawrence has the required ability but is a shirker and a bit of a mardy ass. Then he'll have a worldie every 5-7 games. If it ever clicks with him, he could destroy this league but will it ever? Overall not that assed to miss out on him.
Lawrence is also more of a ten/central player. Which begs the question do we want two?
Khadra is also very much in the gamble category. He plays more like an inverted winger. Pace and dribbling ability that can leave you purring, but also inconsistent and naïve at times. He's young, though, and might have a breakout season. He is also gives us something we don't really have. Of the two I'd rather gamble on Khadra. We also have players with the guile to make that final pass (Berge, Ndiaye, maybe others) so it's not as if all the emphasis is on his end product. If he can beat players, get us up the pitch, and get the ball to those guys goals will come.