The match, which will take place at Orient's Breyer Group Stadium on Saturday afternoon, will see Darrell Clarke's Saddlers heavily backed as they look to bounce back from last weekend's dismal defeat to Salford City.
The Reds went into the clash on the back of four all-competition victories and looked to have got their season on track following a poor opening few months.
However, they produced one of the poorest performances of the season, going on to ship three unanswered goals as the visitors secured all three-points.
This weekend's clash is ALL TICKET so there will be no tickets available on the day of the game as the O's are expecting a bumper crowd as fans get the chance to watch 'Football for a Fiver'.