The Glovers could only name five substitutes - two of which were scholars - as they were beaten 3-0 by Bournemouth on Boxing Day.
Johnson has seen on-loan duo Korey Smith and Joe Edwards return to parent clubs Norwich and Bristol City, while Paddy Madden's loan spell ends after the game at Fratton Park.
Johnson is hoping to add to his squad in January with Smith, Edwards and Madden all being looked at.
Yeovil will hand a fitness test to Sam Foley. The midfielder limped out of the 4-1 victory over Oldham with a tight hamstring and was ruled out of the Bournemouth game but is hoping to make his return.
- Sports & Recreation
- Paddy Madden