By Stine Jacobsen and Helena Soderpalm COPENHAGEN (Reuters) -Some 1,000 SAS pilots in Denmark, Norway and Sweden could go on strike from late June over disagreements on wages and ways to cut costs at the struggling Nordic airline, labour unions said, drawing a sharp rebuke from the company. “We have been negotiating for months without being able to agree,” Danish Pilot Union leader Henrik Thyregod said in a statement on Thursday. “We have gone to great lengths to help SAS, and we have offered the company huge savings. But we can under no circumstances agree to deteriorations (or wage cuts) of …