I’d just add that you are actually required to take the role back to the market after a maximum number of years, regardless of what any ongoing contract may state, or when it was agreed to. It’s about a 10 or 12 year max rolling engagement – check the legislation. It’s your good excuse that required by law to lose a contractor that has been there for too long. This makes sense, as your requirements may well have changed, your pricing may need reconsideration and some market competition might be what’s needed to see who-else is out there and allow for change that might well be long overdue.