New loan signings Pim Balkestein and Lewis Grabban could make their debuts for Brentford.The Bees are still without defenders Mark Phillips (knee) and Ryan Dickson (hamstring).
Leyton Orient will bring in John Spicer, signed on loan from Doncaster, and Eric Lichaj, who has arrived from Aston Villa.
Stephen Purches, who missed last week's game against Huddersfield, will face a late fitness test on his calf injury.
Source: BBC Sport
