Muntari, Prosenik join Milan

The Ghana international, who becomes a free agent in the northern summer, has made just four league appearances for the Nerazzurri this season.

A statement from AC Milan read: "AC Milan announces it has acquired Sulley Muntari on a temporary loan."

Milan opted to make a move for the 27-year-old after losing midfielder Alexander Merkel last week to a knee injury for two months.

Merkel only returned to Milan earlier this month in joint ownership from Genoa with the Rossoneri facing a shortage in midfield due to the injury problems of Mathieu Flamini, Gennaro Gattuso and Alberto Aquilani.

Former Sunderland player Muntari becomes the Rossoneri's fifth reinforcement in the winter transfer market and its second of the day after teenage Austrian striker Philipp Prosenik joined from Chelsea.

The 18-year-old has joined the Rossoneri on a permanent transfer for an undisclosed fee.

A statement from Milan read: "Philipp Prosenik's contract has been deposited with the Lega Serie A."

Prosenik joined Chelsea in the northern summer of 2009 from Rapid Vienna.

The Austria Under-19 international is the son of former Austria international Christian Prosenik.