Per SI.com media maven Richard Deitsch:
SI.com has learned that Fox Sports is aggressively pursuing ESPN sportscaster Erin Andrews for a role at its network. The network's executives recently met with Andrews regarding a major role in Fox's college football coverage.
UPDATE: Tweet from ESPN PR guy Josh Krulewitz, making it official at least that she is leaving ESPN:
Erin Andrews leaving ESPN. She did great work for us & we made an aggressive offer to keep her. We wish her the best on her next chapter— Josh Krulewitz (@jksports) June 29, 2012