Although Lamar Jackson and the Baltimore Ravens have kept details of their contract negotiations private, the star quarterback turned down what league sources believe was an offer worth about $250 million.

The Ravens also balked at Jackson's wish for a fully guaranteed deal similar to Deshaun Watson's, sources told ESPN, prompting the sides to table contract talks until after the 2022 season.

Sources told ESPN's Chris Mortensen that the Ravens proposed a six-year contract believed to pay Jackson a higher average salary and more guaranteed money than deals signed this summer by Broncos quarterback Russell Wilson and Cardinals quarterback Kyler Murray.

Wilson signed a $242.5 million deal earlier this month that averaged $48.5 million annually and included $161 million guaranteed, about six weeks after Murray received a $230.5 million deal that averaged $46 million per year and included $189.5 million guaranteed.

But the issue for Jackson wasn't Wilson's deal or Murray's so much as it was Watson's, according to sources. The Browns signed Watson to a fully guaranteed $230 million contract, and Jackson wanted to match it, sources said.