This trade might make sense for both teams:
Lakers Trade: D'Angelo Russell, #2 (Ingram)
Philly Trades: Jahlil Okafor, #1 (Simmons)
Sounds like the Lakers want Simmons. Philly loved Russell. Lakers reportedly loved Okafor, but for whatever reason took Russell over him - some suspect it was so they could make Philly trade up to get him. Philly needs a SF like Ingram and obviously could use a guard like Russell.
Logical move for both teams unless Philly is convinced Simmons is transcendent and wants to build around him.