"I am a man between the devil and the deep blue sea. I want him to be a huge success this season because it will mean Birmingham City are a huge success. "But looking long term I'd like him to be with us for the rest of his career, eight to 10 years. So every time he gets another goal I think 'is someone going to come in and snatch him away from us?' "We will do everything in our power to get him. He is a Chelsea player and we've got to face the fact that it is very difficult going into competition with Mr Abramovich with his billions. If he wants something, he is going to have it."
The Finland international, who is on a season long loan deal at St. Andrews, has rattled-in 12 goals in 23 starts for the Blues since joining from Chelsea last September.
With Blues hoping to secure the prolific striker on a permanent deal at the end of the season, Gold is concerned that Forssell could be lured to one of Europes 'bigger clubs'.
"Mikael is a quality player and every time he scores I just fear that the price will go up for him if he becomes available," the Blues chairman has said.