"The last few days have been the ultimate roller-coaster," Ridsdale said in a statement on the club website. "Hot on the heals of the dismay of Robbie Fowler leaving came the welcome news of a new signing - and then again the disappointment regarding Marcus Bent.
"I totally understand the frustration that all Cardiff City fans feel... please just understand that we will acquire the missing links to give us the chance to compete this year.
"We have made tremendous progress and we will not let the odd hiccup disrupt our plans. As always thank you for your support and understanding."