Left-back Tonkin has missed the last three matches due to a side injury but is back in training as the Shots aim to haul themselves off the foot of the npower League Two table.
One player who will not be involved, however, is attacking midfielder Ainsworth who, having started Aldershot's last two games, has been recalled by parent club Rotherham.
Defender Troy Brown is back in training after being sidelined for over a month with an ankle injury but the game comes too soon for him.
Striker Danny Hylton is also making good progress with his knee injury but it is not yet known when he will return to contention.
- Sports & Recreation