Dan Butler will today discover the extent of the medial knee ligament damage which will rule him out of Richie Barker’s early plans.
The left-back suffered the injury after just eight minutes of Aldershot’s clash at Weston-super-Mare last week.
It was the fifth match of an encouraging loan spell at the Skrill Premier side who have been impressed with the youngster’s early impact.
However, the tackle by Tristan Plummer resulted in Butler being stretchered off, and on Saturday he underwent a scan.
The Isle of Wight-born defender is now awaiting the results, although will miss a large chunk of the start of the Barker regime which officially gets under way today.
Days before the incident, Butler’s loan at the Electrical Services Stadium had been extended until January 25, such had been his impact in the opening month.
There was, however, the option of an early recall for Pompey should they wish to do so.
The loan spell had offered the teenager precious match time after being left out of the Pompey side following the first two games of the season.
Left-back has been a problem for the Blues, with Shaun Cooper, Danny East, Joe Devera, Marcos Painter and Dan Potts also used there.
Butler, however, is regarded as the future.