zatrebati

1. (person in dat.) to be needed; to come in handy
   Ako ti nešto zatreba, samo me pozovi. — If you need anything, just call me.
   Sačuvaj račun, možda će ti zatrebati. — Keep the receipt, you might need it.

Like trebati: the person who needs is in the dative and the needed thing is the subject (zatrebaće mi auto).