The head coach was forced off with a shoulder injury as Barnet came from two goals down to draw with Exeter at the weekend.
The result meant the Bees had picked up seven points from a possible nine over the Christmas period but the likely loss of the former Dutch international comes as a big blow.
Davids, who took solo charge for the first time following Mark Robson's departure, will have further tests on his shoulder to assess the full extent of his injury.
Jon Nurse replaced Davids and kick-started the fightback with a 76th-minute goal and could make the starting XI.
But strikers Collins John (hernia), Ishmail Kamara (shoulder) and Steve Kabba (knee) remain unavailable.
- Sports & Recreation