The 23-year-old only joined Sturm Graz in January, but is now wanted by a host of clubs this summer.
Rangers, Torino and Levante have all been credited with an interest in the defensive midfielder.
According to Sky Sports, Rangers are furthest forward in their efforts to sign the player, with discussions with his representatives underway and ongoing.
Torino, and another unnamed Serie A club, are thought to be monitoring the situation surrounding Fosso this summer.
Levante have reportedly submitted an initial contract to Fosso’s representatives over the possibility of a transfer deal.
Previous reports suggest Fosso is contracted with Sturm Graz until 2028.
So far, Rangers have signed Ivor Pandur, Dan Neil, Lawrence Shankland, Ben Godfrey and Ross McCrorie.
