He has been 30 min or more for most of his career, especially his time with IND. He was putting up in the range of 15 shots with IND, more like 10 or 11 earlier in his career with MIL. I think he goes back to more like 10 maybe 12 shots per game with the Celtics.
And with those shots, I want to see good scoring efficiency and getting to the line. So say 11 shots, 8 2-pointers (5 made/63%), 3 3-pointers (1.1 made/37.5%) and say 4 free throws (3.5 made/88%), that would be 16.8 points off those 11 shots based on assumed shooting percentages that are a reasonable expectation based on his recent career averages.
I would be very happy with 15 ppg and that level of efficiency.