According to one investigative site on the web, one of the members of Mueller’s team was connected to Mifsud –
Zainab Ahmad, a member of Mueller’s legal team, is the former Assistant United States Attorney in the Eastern District of New York. As pointed out by Blackburn, Ahmad attended a Global Center on Cooperative Security [GCCS] event in 2017. In recent days, Blackburn wrote via Twitter: “Zainab Ahmad is a major player in the Russiagate scandal at the DOJ. Does she work for SC Mueller? She was at a GCCS event in May 2017. Arvinder Sambei, a co-director of the [London Centre of International Law Practice], worked with Joseph Mifsud, [George Papadopoulos] and [Simona Mangiante]. She’s a GCCS consultant.”
https://www.teaparty.org/deep-state-set-trump-campaign-volunteer-papadopoulos-introduced-russian-mifsud-fbi-london-348213/