Years before he filmed the Godfather, Francis Ford Coppola met Al Pacino and they almost made a movie together.
Later, when it was time to cast his greatest film, Pacino was an obvious choice for Coppola.
Ask any successful director for a list of actors or cinematographers or screenwriters they'd like to work with and they can answer you, instantly. They're always keeping lists.
Do you have one? If your firm has an opening for a hire or a freelancer, do you have the name ready, instantly, the one you've been waiting for a chance to work with?
The worst time to go looking is when you need one, badly.