Matt was drafted at No. 25, while Ben went at No. 44.
Steffen became just the second-ever Terp to play in the Champions League.
The Terps have brought in 10 new recruits.
Blumberg made two appearances for League One side Charlton Athletic before coming to the Terps.
Paul Bin, William James Herve and Brayan Padilla were sidelined for much of 2019.
The German started 18 games, and was an all-Big Ten second team selection in 2019.
The season is still due to start in early September despite the schedule change.
Players are using toolboxes and empty fields to stay in shape instead of state-of-the-art equipment.