Cannot implicitly convert type 'System.Collections.Generic.IEnumerable<int> to 'int' : Im selecting an id from an Linq query so it is an int but when i try to use it again it is giving me the error Cannot implicitly convert type 'System.Collections.Generic.IEnumerable<int> to 'int'

    var costcentre = company.CompanyCostCentres.Where(cc => cc.Name.ToLower() == 
    CostCentre.ToLower()).Select(cid => cid.CompanyCostCentreId).ToList();
                            if (costcentre != null)
                            {
                                person.PersonInCompanyCostCentres.Add
                                (new Core.Data.PersonInCompanyCostCentre    
                                { CompanyCostCentreId = costcentre, UserId = 
                                  person.UserId, CompanyId = company.CompanyId, RecordCreated = DateTime.Now, RecordModified = DateTime.Now });
                            }