At DIII, ineligibles can play immediately. At DII, they sit a year and then automatically have 4 years of eligibility as long as their GPA is above 2.0. At DI, they sit a year then play 3 more seasons. They may play a 4th season (Sr/5) if their cumulative GPA is at or above 2.7 but it is the player's option. There is a small chance the player will become eligible during recruiting or between signing and the start of the season.
The player cannot practice with the team so put all practice minutes into SH. Also be aware that the season after he sits out, he will expect playing time as if he were a true Soph.