Leyton Orient have been dealt an injury blow with Dean Cox facing up to six weeks out with ligament damage in his knee.
The influential midfielder was on the end of a heavy tackle during Orient's 3-0 FA Cup win over Bromley on Saturday and left the ground on crutches.
"Dean has suffered damage to medial ligaments and that could mean that he will be out for anything between four and six weeks," revealed manager Russell Slade.
"That's the most disappointing thing but I didn't think there was any deliberate intention in their player's tackle on him.
"It's just one of those things, but it's frustrating for us because he's a key player."
Cox has hit six goals in his last 12 appearances for the Os.