The Philadelphia native is already averaging 14.2 minutes, 4.3 points, and 2.2 rebounds per game in nine games played.
Reaves previously played for the Dallas Mavericks after going undrafted after the 2019 NBA Draft.
Penn State fell to 0-5 in conference play with a loss to Illinois.
Penn State will play 10 games, solely against Big Ten opposition, in the 2021 spring season.
"It is with excitement and gratitude that I announce my retirement from professional soccer."
Coronavirus concerns within Rutgers' program forced the postponement.