The San Francisco 49ers' interest in DeSean Jackson ended the same way as their other pursuits of veteran wide receivers this offseason. Jackson is heading elsewhere.ESPN's Adam Schefter reported Jackson agreed to a three-year deal with the Washington Redskins late Tuesday night. The 49ers reportedly made a late run at Jackson. The only way the 49ers were going to be able to land him if is the Redskins didn't come through with a big offer. That didn't happen.