Allen Iverson -- Coughs Up $3 Million In Nasty Divorce Battle

Former NBA star Allen Iverson finally struck a deal in his bitter divorce battle with his estranged wife and all it took was a cool $3 MILLION to bury the hatchet, TMZ has learned.

We're told Iverson and Tawanna -- who married way back in 2001 -- informed a judge last week they had reached a financial settlement outside of court in their ongoing divorce case ... just days before the two were set to go to trial.

Sources connected with the couple tell TMZ ... as part of the deal, the NBA legend agreed to pay Tawanna $3 million, paid out as a large lump sum. We're told Iverson also agreed to fork over various assets and a percentage of his future Reebok endorsement deal checks. He'll pay up child support payments for the duo's five kids.

On the bright side for Iverson, we're told he scored the couple's GA mansion (which is currently facing foreclosure ... so not so bright) and gets to keep his primo ride, a Maybach, as well as other personal belongings.