The Liverpool youngster had only played 15 minutes of football this season, coming on as a half-time substitute in the FA cup win at FC United fort Warrington, only o be helped off injured on the hour mark.
He had previously suffered injury in the play-off final win over South Shields, and there had been fears he would be out until the New Year.
Dunn, 25, came on in the 87th minute for Tom Warren against the Dabbers.
Tyrone Duffus also made his debut for Paul Carden's side, after signing with the club last week.
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