City defender Angelino was signed last week to become the fifth player from the English giants to join on-loan for the new season.
Goetzee told NOS: “We just need to be alert so that it doesn’t affect the DNA of the club.
“Fortunately, City have a great sense at what lives inside NAC. And we screen the players who come.”
NAC have already secured the return of attacking midfielder Manu Garcia, who became a fans’ favourite as he helped the club back into the top flight after two years in the Eerste Divisie.
That came after striker Thierry Ambrose, attacking midfielder Paolo Fernandes and defender Pablo Mari were announced as the initial trio of loans.