FC Halifax Town play their first home league game of the year when they host Dover at the Shay on Saturday (3pm kick-off).
Town defender Steve Williams has been ruled out of Saturday’s game but winger Adam Smith could be in line for a return to action.
Williams was forced off in the dying moments of Town’s 1-0 defeat against Wrexham in midweek with a hamstring injury.
Aspin is unsure how long the centre-back, who has started Town’s last six games, will be out for but has confirmed he will be unavailable for the visit of Dover.
That could mean a recall for James Bolton, who was an unused substitute on Tuesday, or a début for Graham Hutchison, who Town signed from Worcester on transfer deadline day but has yet to play as he was ineligible for the FA Trophy.
But Smith was expected to train last night and will be assessed before Saturday’s game.
Town’s defeat against Wrexham was their first loss of 2015 and only the third time they had failed to score at home since last April.
Halifax beat 1-0 on the opening day of the season thanks to a Scott McManus goal.
The Whites also lost in the quarter-finals of the FA Trophy in midweek against Bath, but could go above Town in the table if they win on Saturday.
Chris Kinnear’s men have already recorded some impressive results on the road this campaign, including a win at Gateshead and draws at Barnet and Grimsby.
Striker Stefan Payne is Dover’s top-scorer with 12 goals, but has not scored in his last five league appearances.
Only two teams have conceded fewer home goals in the Conference than Town, who could move as high as sixth in the table with a win.