Date of birth
Pompey academy graduate signed his first professional contract in the summer of 2015 after impressing in the youth ranks.
The left-back made his senior debut in a League Cup triumph over Derby at Fratton Park last season, featuring five times in total in 2015/16.
Haunstrup's only Blues appearance of 2016/17 came in the 2-2 Checkatrade Trophy draw with Reading U23s, before he spent time on loan at National League side Sutton United.
2017/18 has - thus far - been a breakthrough season for the Waterlooville-raised defender, with manager Kenny Jackett showing plenty of faith in him in and around the Blues' first team.