Trotman moved to North End from Oldham in January 2008 but was placed on the transfer list by Deepdale boss Darren Ferguson in the summer.
He will come into contention for the derby clash with Keith Hill`s side but Latics left-back Joe Jacobson has joined Accrington on loan, also until January 3.
Right-back Kieran Lee has missed the last two matches through injury and will be assessed.
Portuguese winger Filipe Morais, who is in talks with Oldham about extending his stay until the end of the season, completes a three-match ban.
Source: PA
Source: PA