Risa

That info is out there for sure, but I've always found it pretty shaky. Here's what Memory Alpha has to say on the subject:

The Star Trek Chronology, 2nd ed., p. 290 noted: "Although Picard and company were successful in eradicating them, the parasites did send a mysterious radio signal, presumably to others of their kind. At the time the episode was written, this was apparently intended to lead to the introduction of the Borg in Star Trek: The Next Generation's second season. The Borg connection was dropped before "Q Who" (TNG) was written, and the truth about the parasites remains a mystery."

The "apparently" always trips me up, but maybe there's a more definitive statement or there that I haven't seen.

It certainly could be true.