McCarthy this week signed Nsofor, his former West Ham teammate to his club Cape Town City.
McCarthy and Nsofor were teammates at West Ham between 2010 and 2011 where the South African football legend acted as a mentor to the Nigerian striker.
“Obinna, he’s a great friend of mine,” McCarthy told the official website of Cape Town City.
“I’ve known Victor from his days in the Nigerian national team when he used to be a strike partner for Obafemi Martins. Back then, obviously when he signed with Inter as an African player everyone knows about it. It was round about that time I was in England, Spain, Portugal. It is big news for African players when they get such an opportunity.
“I came across him at West Ham where we played together. He was a bit youngish, I took him under my wing as I was on the way out. We became friends and always just kept in touch all these years.
“I learnt he was free and doesn’t have a club. Of course, when you are in Europe why would you come to South Africa? So I had to persuade him a little bit to get back into football and that he can always go back to Europe.
“And to my shock and surprise, he said, ‘yeah, why not?’ What has he got to lose? So he came down and that’s it, because we were teammates at West Ham and with what he’s seen and read that the team play nice football.
“He’s a very humble guy and hopefully he can teach the guys some stuff or learn from them as he’s been out of African.”
Nsofor joined the South Africa Premier League side on a one-year deal after he was released by German Bundesliga 2 side SV Darmstadt.
The 30-year-old signed had trials with the Cape Town City before he signed a deal with them.