A highly placed NFL source said the contract stalemate between the 49ers and first-round draft pick Michael Crabtree will likely continue to at least the first game of the regular season. At that point, a continued absence by Crabtree would jeopardize potential game checks. The 49ers' front office declined comment Wednesday. Crabtree's agent, Eugene Parker, has said he will not negotiate through the media. Crabtree is believed to be seeking a contract commensurate with a higher pick. Parker has not discussed offers publicly. ESPN.com quoted Crabtree's cousin and adviser, David Wells, as citing the $38 million ($23.5 million guaranteed) given to No. 7 pick Darrius Heyward-Bey. "Michael just wants fair market value," Wells told the Web site.