La Liga strugglers Real Zaragoza have completed the signing of Jiri Jarosik.
The former Chelsea and Celtic midfielder was a free agent after leaving Russian side Krylya Sovetov Samara and becomes Zaragoza's third new signing of the January transfer window.
Jose Aurelio Gay's side had already drafted in Eliseu on loan from Lazio until the end of the season and Humberto Suazo also made his move from Mexican side Monterrey.
Jarosik, 32, brings a wealth of experience with him, having earned 23 caps for the Czech Republic and also won league titles in four countries with the Blues, Celtic, Sparta Prague and CSKA Moscow.
Zaragoza achieved promotion back to the Spanish top flight last summer but have found the going tough so far and currently sit 19th in the standings.
Jarosik could make his debut in the weekend clash against bottom club Xerez.
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