Gold has been at Blues 16 years, 12 as chairman, and developed a strong bond with the club but now hopes to see Yeung take it forward to greater success.
Gold told BBC Radio Five Live: "I will follow Birmingham City for the rest of my life.
"I'm really hopeful Carson is going to take the club to the next level and bring great joy to Birmingham City fans.
"Whenever I have spoken to his aides they have assured me money is going to be made available in the (transfer) window.
"The fans will hope that is going to be the case and I certainly hope that is the case."
Yeung first tried to take over at Birmingham two seasons ago but a deal collapsed and the club were subsequently relegated from the Premier League.
They bounced back at the first attempt by winning promotion last season and Gold believes the club is in good shape as it changes hands.
Gold is also confident Yeung has the credentials to take the club forward.
He said: "In negotiations to sell, our main priority was to discover whether the buyer is capable of meeting the financial requirements before getting into deep negotiations.
"Proof of funds is the first thing the board needs to establish.
"We established that and that Carson Yeung's business empire was substantial.
"It's then for the Premier League to go into fine details, going back many years, to check Carson Yeung is a fit and proper person to run a football club and my understanding is that has all been approved."