Siakam just 29 and maybe he gets more chance with Nick Nurse, James Harden can bet in Toronto, both gamble for Raptors and Harden. It's a fair trade for both team, Both Siakam and Harden on last year of contract, Raptors can compete for playoffs, if they lost and Harden not extending his contract, they still get young guard jaden. Sixers gets a veteran player who will appear on the court and can bring more offense and length, and playoff experience. Otto Porter is a 3d guy who can space the floor if he is healthy.