Winger Hackett (groin) was forced off just before the hour-mark in last weekend's long-awaited 2-0 victory at AFC Wimbledon - Town's first win in nine attempts and only their second this season.
Striker O'Donovan (ankle) was also replaced in the closing stages of the clash and the pair will be given as much time as possible to prove their fitness ahead of the trip to the Kassam Stadium.
- Sports & Recreation
- American Football
- Alex Nicholls