The club is something he is stuck with for financial reasons, unless he wants to take a big financial hit. He will want consistent PL football again to increase the value of the club, so that he has the option to get out when the time is right.
He is past the point of wanting to mortgage us to the hilt to try and win a cup or achieve the (previously) unthinkable. He probably knows deep down that 2004-2006 was our peak and his ambition will not be to try and match those achievements.
He will make whatever transfer funds available he can that he feels comfortable with and that are within FFP limitations.