Tuanzebe is available on a free transfer after he was released by Manchester United at the end of his contract this summer.
Despite being talented and captaining Manchester United at every level, the centre-back has been plagued with injuries over the last few seasons and is looking for a fresh start at a new club.
He is in talks with Sheffield United over moving to Bramall Lane and was at the club for medical.
And any deal is dependent on the results of the rigorous medical checks he underwent with the Blades.
Sheffield United are interested in him and are keen to sign him on a free transfer this summer.
However, there are concerns over his injury troubles and lack of game time over the last few seasons.
He had several loan spells at Aston Villa, Lazio and Stoke City before leaving Manchester United at the end of last season.