According to Pro Football Weekly and reprinted in ESPN Insider, the San Francisco 49ers coaching staff has been impressed with newly acquired cornerback Walt Harris and the continued development of Mike Adams.

From Pro Football Weekly:
We hear the Niners have been impressed enough with free-agent addition Walt Harris to consider him the starting left corner over Mike Rumph heading into training camp. The Niners also consider FS Mike Adams to be much improved from last year and no longer think of him as a backup playing a starter’s role.

In other news, the 49ers were not pleased with quarterback Cody Pickett's decision to not play in NFL Europe.

From Pro Football Weekly:
Word is, the Niners were upset that backup QB Cody Pickett decided not to play in NFL Europe this season. There’s talk of moving the athletic Pickett to the team’s motion-fullback position, which could enable him to salvage a roster spot.