In the midst of Dre Bly coming in to chat with the 49ers about their open cornerback position, the 49ers have brought in former Buccaneer and Lion Brian Kelly for a physical.  Kelly is an 11-year veteran who spent a vast majority of his career in Tampa Bay.  He signed a 3-year deal with the Lions last offseason, but was cut before finishing the first season of the deal.

Here's what Scouts Inc has to say about Kelly:

He has good size and athleticism. He contributed mostly in a backup role this season. He doesn't have great perimeter speed to run with the top receivers in the league, but has the foot agility, quickness and short-area burst to be an effective zone or combination-scheme defender. Kelly uses his hands well in block protection and while re-routing receivers off the line of scrimmage . . . He is an excellent reactor funneling receivers while keeping body position as both a zone defender and run-support player . . . durability is a concern.

Kelly played 11 games last year, 11 the year before and 2 the year before that.  Whereas Dre Bly would definitely compete for a starting position, I'd imagine Kelly would be no more than a depth option at this point in his career.  He excelled in the Tampa 2, so I'm not sure how well he could perform in a different defense at this point in his career.

Also, according to Barrows, it sounds like Chris McAllister would have a tough time passing a physical at this point due to a knee injury.  If the team grabbed him it wouldn't be until next month at the earliest.