Filipe Morais has returned to Oldham Athletic on a season-long loan.
The 33-year-old joins from League Two rivals Crawley Town having previously been at Boundary Park between 2010 and 2012.
The midfielder made 68 appearances and scored eight goals during his first spell with Latics.
Former Chelsea youngster Morais has extensive Football League experience with Bradford City, Bolton Wanderers and Millwall among others.
He scored eight goals in 34 appearances for Crawley last season.
Morais becomes the second deadline day loan signing after winger Jonny Smith arrived from Bristol City.
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