Per a source in the Pitt football program,

The Seattle Seahawks who hold the 4th and 37th overall picks in the NFL draft will host running back LeSean McCoy for a private workout next week.
McCoy who ran a 4.52 forty-yard dash on his pro day is now viewed as a second round pick. The Seahawks could have their eye on McCoy with the 37th overall pick.
A a few other draft rumblings, the Steelers had three representatives at the Cal’s pro day. Pittsburgh likely had their eye on center Alex Mack.
Center Alex Mack (6-foot-4 1/4, 307 pounds) is a potential target in the first round for the Steelers. According to NFL. com, Mack had a sensational workout in the position drills and ran a 5.17 and 5.23 in the 40, posted a 28 1/2-inch vertical jump, an 8-foot, 10-inch broad jump, a 4.75 short shuttle, a 7.31 three-cone drill and did 20 bench press reps.