Owners Not Transferring Title Upon Purchase

Our Space Agreement requires that the tenant owns the mobile home and is named on the title (unless they are purchasing the title from the park). We do not allow subletting.

If a tenant, who is in good standing except this issue, buys a trailer and never changes the title would you evict them as they are in violation of the Space Agreement’s terms? We don’t want to lose good tenants, but how do you get them to actually get the title into their names?