Just by looking at two teams, you can see the effects of staying in the Draft, or coming back to school.
E'Twaan Moore and JuJuan Johnson both will come back for Purdue,and will put the Boilermakers as a lock for a top 5 team to start the season. With them, adding Robbie Hummel, Lewis Jackson and a good recruiting class shows how much a team can gain by bringing back two Big-Ten All-Americans.
Prediction: Final 4 Without them: Sweet 16
Gordon Hayward has announced that he will forgo his junior year and go to the NBA. After coming inches short of a game winning championship shot against Duke, he will leave a very good Butler team who could have been preseason #2, to look for big money instead of a chance at a national championship. Now, Butler will be a top-10 team, and will struggle more against solid teams, and will not make the run they just made in next season's tournament.
Prediction: Sweet 16 With Hayward: National Championship game