Murray will pair with Trae Young in one of the NBA's most dynamic backcourts.
Fiala, a pending RFA, is reportedly expected to ink a seven-year contract with the Kings worth an annual average value just south of $8 million.
The 10-year veteran is eligible to sign a five-year maximum contract with the Wizards worth close to $250 million or a four-year deal from another team in the $180 million range, both starting at a $43 million salary.
Harden will reportedly return to Philadelphia on a contract that provides the 76ers with financial flexibility.