I don't watch Detroit so know not much about Grant and a google search of 'Is Jerami Grant a good player' provided a classic 'Yes but...' answer. At this stage I think hold on to the pick and trade Holmes. I think Metu and MBIII are reasonable fits next to Sabonis on offence as they tend to score more from catch and shoot, offensive rebounding, and finishing from others creation. Having said that, although improved, MBIII still not that impactful on defence and seems he is likely to be moved.