Thuram´s switch from Barcelona to the Ligue 1 club collapsed last month after medical tests discovered he has a heart problem.
The defender´s brother died from the same condition and Villeneuve believes Thuram should not risk suffering a similar fate.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms