Boro have been on the lookout for a goalkeeper addition this summer, with current number one Dimitrios Konstantopoulos lacking sufficient cover at the Riverside Stadium.
Agazzi has long been sounded out as the ideal man for the job, and now fresh reports from Italy claim a deal has been agreed and will be finalised subject to the player’s medical.
The deal is an initial season-long loan with the option of a permanent switch to Teesside at the end of the current campaign, with the club hoping to have achieved promotion to the Premier League by then.
The Championship outfit are among the favourites from promotion, largely due to their excellent defence which helped Konstantopoulos keep an astonishing 20 clean sheets last season.
With the Greek very much in the twilight of his career at 36, the younger Agazzi, 31, could even oust his upcoming teammate from the number one spot as early as this season.
The Italian has plenty of Serie A experience having played with Cagliari for four years, and at AC Milan working alongside Christian Abbiati and Diego Lopes will have been a valuable experience.