Linq Query using Contains and not contains

I am trying to fetch records from database in the sense that it should getrecords where name contains "searchKey" and name not in the excludeTerms array with comma seperated. How can I do this in Linq?

 Rows = (from u in DB.Clients
         where u.Name.Contains(searchTerm) && !u.Name.Contains(string.Join(",", excludeTerms.Select(s => "'" + s + "'").ToArray()))
         select new ClientModel
         {
            Name = u.FullName,
            Id = u.Id,
         }).Take(5).ToList();

Where excludeTerms contains list of elements, such as

1)Sandy
2)Mandy
3)Larry etc

List<string> excludeTerms = new List<string>();