broker [brokers](mediator between a buyer and seller) noun [UK: ˈbrəʊkə(r)] [US: ˈbroʊkə(r)]
intermediary(an agent acting as a mediator between sides to facilitate agreement or cooperation, see also: mediator) noun [UK: ˌɪn.tə.ˈmiː.dɪə.ri] [US: ˌɪn.tər.ˈmiː.die.ri]I am an intermediary who introduces business. = Sono un intermediario che introduce gli affari.