كتب : Sherif Tarek
Atletico announced on their official website that Tiago is so close to joining them, but didn't disclose many details.
The contract of the 28-year-old will be extendable in order for the Primera Liga outfit to keep his services on a permanent basis should he impress.
Portuguese international Tiago also plied his trade at French club Olympique Lyon and Premiership side Chelsea throughout his career.