The 49ers are still interested in signing free-agent linebacker Takeo Spikes, according to the San Francisco Chronicle. Nothing is eminent between the two parties, but General Manager Scot McCloughan claims that the mutual interest is "50-50" at this point.

San Francisco 49ers' OL David Baas will likely be out until the regular season after tearing his right pectoral muscle lifting weights, according to an Associated Press report. Baas was slated to start at right guard this season after starting nine games at the position last year. He will undergo surgery on Friday after injuring himself last week.

The Broncos are looking to add depth to their wide receiver corps and have their eyes on free agents Samie Parker and Darrell Jackson, according to the Denver Post. Parker last played with the Chiefs, while Jackson was cut by the 49ers earlier this offseason. It is believed that the Broncos could reach an agreement with Parker by Monday, unless they decide to give Jackson a longer look.

The 49ers are very interested in Auburn linebacker Quentin Groves and aren't concerned about his recent minor heart surgery. In February, Groves was diagnosed with Wolff-Parkinson-White syndrome, a condition in which the heart has an extra circuit that can cause it to beat faster than normal. Groves had that extra circuit removed March 27 and has been fine since, according to his agent Sean Kiernan. "An (electrocardiogram) taken seven days after surgery shows he is completely normal," Kiernan said. "He no longer has (the syndrome), and there are no long-term ramifications to this condition."