Real Sociedad have completed the signing of Inter Milan midfielder McDonald Mariga.

The Kenyan international midfielder deposited the contract that will take him to Real Sociedad until the end of the season.

This deal also includes an option for the Liga club to buy the midfielder in June 2012.

The 24-year-old first joined Serie A from Helsinborg in 2007 for €2m, then moved to Inter in February 2010.