The only thing that kept Tobi out of the starting lineup this year, and going forward, is foul trouble. Until he gets that under control, he will not start. Even coming in off the bench this year, he has had to sit towards the end of the first half quite a few times due to picking up his second foul. Until he cleans up his foul issues, starting him would just send him to the bench earlier in the half - which is not what you want from your starters.
Tobi leads the team in fouls this year with 92. Kuany is second with 80. Fermin is third with 77. That's a lot of fouls, teamwise, down low. VCU's bigs have got to do a better job in this area next year.