Leyton Orient will look to keep their automatic promotion bid on track at relegation-threatened Crewe Alexandra tomorrow afternoon. 

Midfielder Marvin Bartley is a big doubt after picking up a hamstring injury against Carlisle United. Romain Vincelot (knee) and David Mooney (foot) have been out for a number of weeks but, according to Slade, one of them could recover in time to feature on Saturday.

Striker Robbie Simpson is also available to play after he signed a deal until the end of the season on Wednesday. 

Crewe are currently third from bottom in League 1 but Slade insists the promotion challengers will not take them lightly.

The Orient manager said: “There is no easy game. Every match brings a different challenge and Crewe will be no different. Their home form is solid for a team in the bottom four.

"Their problems have been more away from home so they will be looking to continue their decent home form. I think they’re capable of pushing up the table.”

Slade, whose side have the best away record in England this season, added: “For us, it’s just a matter of keeping going and staying on track.”