City have just sold their number two Shay Given to Aston Villa and Roberto Mancini wants experienced cover for Joe Hart.
He is now giving 32-year-old Hildebrand the chance to earn a move to Eastlands and he and his coaches are running the rule over him.
Hildebrand, who won the last of his seven Germany caps in 2007, is currently a free agent after leaving Sporting Lisbon after just one season in Portugal.
He has previously played for Stuttgart, Hoffenheim and Valencia and could be an ideal understudy for Hart.
Source: Team Talk
Source: Team Talk