Orient manager Andy Edwards was in interim charge the last time the O's faced Barnet, and he now feels they will come up against an even tougher test than experienced at the Hive.
On that day back in October the O's picked up a point from a goalless draw, however, since the January transfer window has opened, the Bees have been able to add the likes of Ricardo Santos, Simeon Akinola, Dan Sweeney and David Tutonda.
With the addition of that quartet Edwards expects his side to be challenged significantly if the O's wish to emerge with a positive result.
Sam Dalby, Teddy Mezague and Sandro Semedo missed the trip to Exeter after picking up injuries in the 1-1 home draw with Cambridge United, but Edwards is hopeful the trio can return for the London derby against Rossi Eames' side.
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