Conversation so far:
Who did Reggie Jackson play for in 1980-1981?
Reggie Jackson entered the last year of his New York Yankee contract in 1981.
What happened with Reggie Jackson during that last year with the New York Yankees?
As he entered the last year of his Yankee contract in 1981, Jackson endured several difficulties from George Steinbrenner.

Question: What kind of difficulties?
Self-contained rewrite: What kind of difficulties did Reggie Jackson have with George Steinbrenner?