I don't know, from what I've seen of Keane (admittedly not enough) he doesn't seem to be the kind of player that would do well in Rafa's rotation system. I won't deny his ability, but I don't think he'll fit in well enough to justify the fee they paid.
Think people rate Scolari based on his INT experience. Chelsea are a team with an international at every position (I think).
Look at this bullshit. When they were jumping on me for speaking funny, there were no Americans on the board. Now it's time to fight and everyone remembers their password.