Conversation so far:
When did Badfinger's signing to Apple happen?
Beatles roadie/assistant Mal Evans and Apple Records' A&R head Peter Asher saw the Iveys perform on 25 January 1968. Evans signed the Iveys to Apple on 23 July 1968.
Who was the businessman Stan Polley?
New York businessman, Stan Polley, signed Badfinger to a business management contract in November 1970.

Question: What prompted this?
Self-contained rewrite: What prompted Stan Polley to sign Badfinger to a contract?