Houllier had acted in a very strange manner which shows contradictions to his earlier judgements on players, but what amazes me is how soon he shows doubts in most of his signings.
He bought loads of players from outside the British Isles, some of them very expensive. Yet he gave them very little chance to establish themselves and even when he does, he plays them out of their natural position. It was as if he came to realise that they are not what he thought them to be when he purchased them and they are condemmed to the squad or worse, the reserves. His solution? Buy another foreign based player.
Also, he squandered some very good talents like Litmanen, but that is beside the point here as Traore said that he does not trust or demand more of his countrymen.
I think Houllier in his last 2 seasons became desperate for results that he never gave his foreign signings much of a chance to bed in, if they don't work almost immediately, he won't give them much playing time unless he is forced to by injuries to his more regular players.