I don't think Coach Corbin is as inflexible and biased towards veterans as some people. Veterans naturally have an advantage in that the coach largely knows what they are capable of. But that doesn't mean that Burks has no chance of getting more minutes. If he shows in practice and games that he is better than Foye, his minutes will increase.
Why doesn't Foye have to earn his minutes? Burks has clearly outplayed Foye besides the fact that Foye is a rent a vet and Burks still has a few more years on his contract. This is a Jazz tradition. They did it last year picking up Howard. In my opinion it holds back the development of the young guys.