Lein on property I'm interested in buying.

[Shweta Saraf]

I have really liked a property which was pending sale last year dec but was back on market in jan after the initial sale fell thru from dec.The property got relisted,so I put an offer.The same day the property got withdrawn from market.A few days later our offer got accepted.The seller disclosed that the property has a lein on it from IRS and Amex which means the tittle is clouded.We're willing to wait for 90 days for seller to clear the tittle. My questions are : 1) Can I put in a lower offer since the property has these issues?

2)Is there something I'm missing or unaware of with this type of legality? Should I walk away? Is this too messy to deal with?