Nicolas Anelka is free to resume his career in England after completing an education course following his quenelle gesture.
St Mirren have signed winger James Dayton from Oldham on loan until the end of the season.
Burnley forward Alex MacDonald has extended his loan spell with Plymouth.
The Scotland Under-21 international spent time at Home Park last season and returned for a second stint at the end of August.
MacDonald's deal will now run for the maximum time allowed under the emergency loan system, keeping him with the npower League Two outfit until the first week of December.
In the current campaign MacDonald has scored once in eight appearances for Argyle.