So I have not seen him play.
But reading his "biography" you can see some potential. Some inconsistency issues also.
Some highlights of the comments from Nigel Johnson's Sophomore season at Kansas State:
1) Averaged 18 minutes a game, and 34% from 3-point range.
2) Averaged 1.7 assists per game and 1 turnover per game - not a bad ratio.
3) Averaged just 5.2 points per game (not much), in those 18 minutes a game. The inconsistency comes into play, due to Johnson having double digit scoring in 6 games, including 4 of his last 8 games of the season (which included a 20 point and a 17 point performance in 2 of his last 4 games), but only averaging 5 points a game overall.
4) He started 8 games ... but though biased towards the end of the season, even then his playing time was wildly inconsistent: Some games he played 30+ minutes, some under 10 minutes ... and this was after their suspended starting 2G Foster was back and playing and starting (i.e. Johnson started some games with Foster back, but did not start others with Foster back).
5) Johnson's 2 best games were against Kansas States' 2 best opponents: Kansas and Iowa State - both late in the season. John son got more playing time, and had better stats (linked to playing time, no doubt) in the last month than earlier in the season.
I do not know if Johnson is an impact player, per se. But he would be RU's best or 2nd best perimeter shooter NOW, it would appear. And will clearly be a major contributor immediately. It appears on PAPER he would be an upgrade over Daniels, for next season.