Citi is notorious for suing, so I would tread cautiously here. That's not to say they WILL sue, but during my time working for a settlement company, many many many of the summons accounts that I saw were Citi accounts. They will settle, but the average settlement with them is around 50%. Are you current on your payments right now? If you are considering settlement, I would let the account charge off, save up approximately $6,000 and begin negotiations. Start by offering a small, lump-sum settlement and work from there.