With the likelihood of City manager Mark Hughes bringing in some huge names during this transfer window, Vassell may opt for a fresh start.
According to Ankaragucu chairman Cengiz Topel Yildrim, negotiations with the former England international are going well.
"We've completed the pre-negotiations with Darius Vassell,” he told Radyospor.
"We aim to secure a big signing as this year is our centenary.
"He [Vassell] will visit the city and our installations. Then he will make a decision.
"I hope we can include him in our squad."