He will fly out to Germany and could feature in City's opening game against Gemueden/Hunsruck Select.
Peter Reid said: “I’ve known the boy for a long time and he’s a very experienced player but still quite young in relative terms. He’s played at this level before when Bristol City were in Division One and I remember him coming to Sunderland and he stood out then.
“He’s predominantly a right back but he can just as easily slip into the centre and I think he will do a really good job for us.
”I’m not worried about his fitness too much because he was playing quite late on with Bristol in the play-offs. But he’ll come out to Germany and meet us so he will have time to get some matches in.”