Haji Mnoga has joined Weymouth on a youth loan until the end of the 2021/22 season.
The 19-year-old defender – who penned a new Blues deal last summer – spent the first half of the campaign with Bromley.
He also featured for Pompey in the Papa John’s Trophy group stage fixtures against AFC Wimbledon and Sutton.
Weymouth are currently sitting just inside the National League relegation zone having lost their past six games.