The 49ers have reportedly made their roster move to replace WR Joshua Morgan for the short term. While the 49ers have not yet made it official, reports indicate they are going to sign wide receiver Brett Swain this week. Swain was a member of the Super Bowl winning Packers this past year but was cut by the team in their final roster cuts. The 49ers brought in several players for workouts, including T.J. Houshmandzadeh and Chris Chambers, but settled on Swain.
This signing makes sense in the context of the team's needs. brett Swain led the Packers in special teams tackles in last year's Super Bowl and I would imagine he will see a fair amount of special teams play in the coming weeks. The team will move Ted Ginn Jr. and Kyle Williams further up the depth chart rather than try and jam in somebody else opposite Michael Crabtree.
The 49ers will need to make a roster move to make space and my guess is Colin Jones likely gets waived and sent back to the practice squad (if he clears waivers). The team could place Morgan on injured reserve still, which would also clear up a roster move. Once the 49ers make it official, we'll know more about the corresponding roster move.