Dec 31, 2006 9:35 AM EST

According to a person with knowledge of the negotiations, the Randy Johnson trade proceedings have hit a serious roadblock.

As part of an agreement for waiving his no-trade clause, Johnson is looking for an extension, but the Diamondbacks, who already owe Johnson about $40 million in deferred money, apparently are looking for a way to factor some of that cash into the extension.

Via New York Daily News