Former Northampton chief executive Keith Grainger will take up his post as the new tournament director of the Celtic League on Thursday. The 45-year-old has also worked on the commerial side at both Leicester and Newcastle. League chairman John Hussey said: "I'm delighted that the flagship professional tournament of the three Celtic unions - Ireland, Scotland and Wales - has been able to secure Keith's leadership. "He has a very firm understanding of the demands of the professional game and his commercial acumen is second to none."