The on-loan left-back was forced off just after the hour mark in a 1-0 home defeat to Bournemouth having appeared to damage his knee while putting in a brave block on the edge of the penalty area.
Striker Freddie Sears is likely to miss out once again with a knee problem of his own which has ruled him out of the last five games, although his in the frame to return in time for next weekend.
George Porter serves the second game of his three-match suspension while defender Tom Eastman is also expected to miss out once more due to injury.
The U's now find themselves just three points above the relegation zone.
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- Freddie Sears