LONDON -- The San Francisco 49ers have been getting terrific production from rookies safety Eric Reid, the No. 18 overall pick of the draft. Still, they may soon get the services of another player who could have been a high first-round pick in April.San Francisco general manager Trent Baalke echoed the thoughts of coach Jim Harbaugh, saying defensive lineman Tank Carradine is on target to being activated from the Physically Unable to perform list.