The Glovers know a point at Gigg Lane will secure a place in the top two play-off spots, meaning they will play the second leg at Huish Park, but they head up north with a threadbare squad.
Nathan Ralph was forced off in the 1-0 win over Crewe last weekend and he could miss the rest of the campaign while Angelo Balanta also limped off against the Alex.
The QPR loanee joins Dan Burn and Middlesbrough loanee Matty Dolan (both ankle) on the sidelines but there is better news about centre-back Byron Webster who has a slight hamstring strain which should only sideline him for Saturday's match.
Despite picking up two black eyes and a nose injury against Crewe Luke Ayling looks likely to continue in the side having trained this week. Brighton loanee Vitalijs Maksimenk is also expected to feature once more.
But Johnson has not been risking captain Jamie McAllister as they manage his ankle problem ahead of the play-offs and he will sit out again.
A point against already-relegated Bury would clinch the highest finish in Yeovil's history, topping the final position of fifth back in 2006/07.