Inter have signed Kenya midfielder McDonald Mariga from Parma, hours after a move to Manchester City collapsed.
The 22-year-old had been set to join the English Premier League club but British work permit problems halted the transfer and the Italian champions quickly seized their chance on deadline day.
"FC Internazionale have completed the signing of Kenyan midfielder McDonald Mariga on a co-ownership deal from Parma," read a statement. "Mariga has signed a contract until 30 June 2014."
As part of the deal, striker Jonathan Ludovic Biabiany, already at Parma on loan, stays with the Gialloblu on a co-ownership deal, while Luis Antonio Jimenez joins the Emilia-Romagna club on loan after returning from his loan spell at West Ham United.
Jose Mourinho's Inter, who earlier loaned struggling winger Amantino Mancini to city rivals AC Milan, had been looking for a new midfielder after selling Patrick Vieira to Manchester City earlier in the transfer window.
The Serie A leaders last week pulled out of a deal to take Valencia's Manuel Fernandes on loan and had also been chasing Palermo midfielder Simplicio and Lazio's Cristian Ledesma.