Defender Joe Robinson’s loan with Vanarama National League South side St Albans City has been extended to the end of the season.
Robinson has made four appearances for the Saints having joined them at the start of March.
The 20-year-old from Haverhill, who signed a one-year contract last summer, has previously spent stints on loan at Boston United and Woking.
Robinson’s only senior appearance for the Blues was as a sub in the FA Cup replay at Portsmouth last season.