Given that the vast majority of your signings have either directly played under him or from the Dutch League it's fairly clear that he's lead your recruitment and I'm genuinely amazed that you're objecting to this. It's been a running joke, even amongst Utd fans, for over a year now. Will the manager personally be negotiating the deal? No (although there's all sorts of stories about his agent being involved in a lot of Utd deals) but the money men at the club are negotiating fees for players that he's choosing.