Whites boss Daniel Farke rates Struijk highly and made sure he stayed at Elland Road last summer when it looked like he might be on his way out.
Farke even entrusted Struijk with the captain’s armband several times last season, but the defender’s campaign was ended by a groin injury at the turn of the year.
Now Torino sees Struijk as an alternative.
The Italian side are looking to bolster their defensive options and know they could lose the services of Alessandro Buongiorno this summer.
Buongiorno is wanted by both Napoli and Inter and could leave Turin.
Struijk is one of a number of options Torino are evaluating and it is unclear whether Farke would approve a move.
Leeds are close to losing a centre-back in the form of Charlie Cresswell, who is set to sign for French side Toulouse.
But they have just brought back Joe Rodon from Tottenham Hotspur.