Free agency starts Tuesday.The San Francisco 49ers' main priorities are trying to get deals done with safety Donte Whitner, who the New York Jets reportedly are interested in, cornerback Tarell Brown and kicker Phil Dawson. While the team would like to re-sign them, it is very possible all will test the open market starting Tuesday afternoon. Last week the team signed their top free-agent priority, receiver Anquan Boldin. His salary-cap number for 2014 will be $3.