Complex sentence: He spent two more seasons with the Knicks, sharing time in the front court with Bill Cartwright and Patrick Ewing, before signing as a free agent with the expansion Miami Heat in 1988.
Split into simpler sentences: He spent two more seasons with the Knicks, sharing time in the front court with Bill Cartwright and Patrick Ewing. Cummings signing as a free agent with the expansion Miami Heat in 1988.