I am being headhunted by my previous employer.
We had worked together very well and had very close personal relationships until I resigned to join my current company, which is a direct competitor of my previous employer. After tendering my resignation they sent the police after me for allegedly stealing confidential information from the company, requiring me to hire a solicitor (attorney, legal council) to resolve. They additionally dismissed me from employment upon tendering my resignation, and contacted my current employer to explain why they should not hire me due to my alleged theft of intellectual property.
I did not steal any confidential information from my ex-employer, and as it is a big company I did not understand the motivation behind their reaction to my resignation.
Since they are headhunting me without me applying for any jobs there or showing any interest, I am curious about their offer. I have heard that my departure left a big gap, but also think it may just be to get back at my current employer for hiring me away in the first place.
Should I even entertain their request for a meeting to discuss this offer, and if so what precautions should I take given our history?