At least wait until the end of the season. If he gets us two trophies, or at least the league, then maybe start talks of his secure future.
Its too early to say whether or not we want him 4eva, I think. I like him, but he's yet to calm down with those mad substitutions, like Gerrard @ Everton and Keane @ Spurs, which often lead to awful things.
And then there's his undying love for Kuyt.