The current Kenya national team head coach has been on tour in South Africa promoting his self-titled book 'BENNI' which was written by legendary commentator Mark Gleeson.
McCarthy was asked which two clubs he would like to coach in the future during a Q&A at his book launch in Cape Town.
"Maybe in five to 10 years, I want to be the head coach of Man United," said the former Red Devils first team striker's coach.
"And in South Africa, I've always been a Kaizer Chiefs supporter, I want to coach the two clubs that grew up supporting. So, Man United and Kaizer Chiefs."
McCarthy has already managed Cape Town City and AmaZulu in the Premier Soccer League, winning an MTN title with the Citizens before guiding Usuthu to their first CAF Champions League appearance.
He served as the striker's coach at Manchester United during Erik ten Hag's tenure before joining the Harambee Stars.
Manchester City manager Pep Guardiola has said Rodri is making progress in his recovery from injury, but the midfielder remains doubtful for Monday's Premier League trip to Everton.
Yusuf Maart has explained how his move from Kaizer Chiefs to Austrian Bundesliga side SV Ried came about.
Ashley Young will retire from professional football at the end of the season, with Ipswich Town's final Championship fixture on Saturday expected to be the last match of his 23-year career.
Newcastle United manager Eddie Howe has admitted results must improve quickly but insisted he still believes he is the right man to lead the club forward.
