Legal Question in Landlord & Tenant Law in Illinois

The landlord may be worried about being held liable if he allows you to take things that belong to his tenant even if the tenant is your uncle. If this is the issue, it may be solved by having your uncle give you permission to remove his things -- something like a release. Check with the landlord if this is his concern and that permission will do the trick. If not, your uncle will have to see an attorney about this since it is his property, not yours, but you can certain help him out if you wish and he wants you to.