Didier Zokora's future at Tottenham is in doubt.
The Sun says Tiago is on the brink of completing his move to Spurs from Juventus.
The Italians will accept half of the £7million transfer fee up front - with the rest payable based on appearances.
Former Chelsea midfielder Tiago, 26, hardly got a look in at Juve but will pick up £35,000 a week at the Lane.
The Blues sold him to Lyon to make way for Michael Essien.
Tiago, who snubbed a move to La Liga, is now expected to displace Zokora at Spurs.