Leyton Orient will be without goalkeeper Jamie Jones for the visit of London rivals Brentford.

Jones was knocked unconscious after a collision with team-mate Ben Chorley in the first minute of last week's defeat by Colchester and has been ordered to rest for a couple of weeks.

Boss Geraint Williams has drafted in young Tottenham keeper Lee Butcher on a month's loan as cover, and he will vie with Glenn Morris for the gloves.

Better news is the return of skipper Stephen Purches and midfielder Adam Chambers from injury.

Right-back Purches is set to wear a face mask to protect his fractured cheekbone after testing it out in the reserves this week, and Chambers also played for the second string after a calf injury.

Midfield duo Jason Demetriou and JJ Melligan are available after suspensions.