The Facts: The Browns might soon be heartbroken by Jimmy Garoppolo, but they won't pursue Kaepernick on the rebound despite Hue Jackson's heavy interest last year, a league source told cleveland.com.

Diehards Line: Kaepernick's agents sent a letter to all 32 teams notifying them that Kaepernick will opt out of his contract on Thursday and become an unrestricted free agent, according to NFL Network and other reports. According to Plain Dealer staffer Mary Kay Cabot, Jackson, who loved Kaepernick coming out of the draft in 2011, wanted to acquire him last off-season, but the 49ers retained him. The Browns signed Robert Griffin III instead, but he missed most of the season with a fractured shoulder, and the Browns don't think they can count on him because of the durability issue. But they won't be going back to the Kaepernick well, the source told Cabot. The Browns will be in the market for a veteran quarterback, although ESPN's Adam Schefter reported Wednesday that "Jimmy Garoppolo is not going to be traded' by the Patriots. The Browns are still expected to try to pursue Garoppolo, and will probably find out at the combine if the Patriots are serious about keeping him. If they are, the Browns will have to turn their attention to other quarterbacks -- Buffalo's Tyrod Taylor if he's released, Cincinnati's AJ McCarron in a trade and Tampa Bay's Mike Glennon as a free agent. But Kaepernick isn't in their plans, despite reports last year that he really wanted to play for Jackson, and Jackson's strong interest in him.