Central defender Vitorino Hilton has signed a one-year contract extension with Montpellier.
AC Milan have completed the permanent signing of defender Cristian Zapata from Villarreal for an undisclosed fee.
The 28-year-old, who joined in July 2010, has struggled with injury during his time at the Riverside and managed 56 appearances.
Only 12 of those came this season, with his last outing coming in the 1-0 defeat Leicester earlier this month.
Elsewhere, teenage striker Jake Fowler has joined Blue Square Bet Premier outfit Stockport on a month's loan.