Bolton have bolstered their squad with the signing of Portsmouth midfielder David Thompson for a nominal fee.
The 29-year-old joined Pompey on a free transfer from Wigan in July and made five Premiership starts with a further seven substitute appearances.
"I have been an admirer of David
Thompson for some time," said Bolton manager Sam Allardyce.
"He has the ability to play at this level and will add competition for places in the critical midfield role."
Thompson becomes the third player to join Bolton in January following Lubomir Michalik and Zoltan Harsanyi.
He started his career at Liverpool and has also played for Swindon, Coventry and Blackburn.