The San Francisco 49ers have acquired Stevie Johnson from the Buffalo Bills.

The 49ers will send a conditional 2015 fourth round pick that can become a third rounder.

Johnson became expendable for the Bills following their offseason acquisitions of Sammy Watkins in the draft and Mike Williams.

Johnson had 52 catches for 597 yards and three touchdowns in 12 games last season for the Bills, but he had over 1,000 yards receiving in each of the previous three campaigns. Johnson turns 28 in July.