Johnson was fired from the Cardinals' staff after an FBI investigation into college basketball recruiting.
Drexel will need to replace its leading 2017-18 scorer; while Ashley Howard picked up his first incoming player as La Salle's head coach.
After hitting .186 as a freshman, the junior leads the Explorers in hitting.
The veteran college coach also coached the girls at Archbishop Carroll High School.
Former Inter-AC Player of the Year Kyle Griffin joins the staff of new coach Ashley Howard.
Villanova's Jalen Brunson and Temple's Tanaya Atkinson are Big Five players of the year.
The former Villanova assistant has the local connections to hit the ground running.
Howard heads for 20th and Olney after winning national title as top Villanova assistant
Villanova assistant Ashley Howard and ESPN analyst Tim Legler are believed to be top candidates.
There are plenty of very interesting candidates to take over at La Salle, including Tim Legler.
John Giannini's coaching tenure will likely be remembered most for La Salle's trip to the Sweet 16 in 2013. But the Explorers have gone just 69-88 since.
This year's group features five former players and includes Saint Joseph's athletic director Don DiJulia as his long tenure on Hawk Hill ends.
La Salle's season ended on a cold-shooting night in a loss to Massachusetts.