Honestly, it's tough for me to tell. I think he has improved, but looks the same this year, or maybe even a little worse sometimes, because the situation he is in this year is so much more difficult than last year. In other words, I think if you put this year's Samuel on last years roster with Shabazz, Daniels, Neils, etc. he would be a better player and provide more than last year's version of Samuel did. The strengths of his game right now (driving and slashing) are much more difficult this year because we don't have the spacing created by a bunch of good shooters.
I do think we can be successful the next 2 years with him playing 20+ minutes a game if he improves at a similar rate to our other guards since Ollie has been on the coaching staff. He should be a + defender, which is a great start. We need him to become at least a minor threat to make 3's, but he has shown some ability to make mid range jump shots, and he doesn't have terrible form.