It's apparent the San Francisco 49ers are possibly interested in drafting a player coming off a major injury again.Former Oklahoma cornerback Aaron Colvin told Sirius XM Radio that he will visit the 49ers this week. Colvin tore the ACL in his knee during Senior Bowl week in January, but he could be ready to play toward the end of the season.The 49ers have shown they are willing to wait for a good player, even if he's injured. Last year, they drafted defensive lineman Cornellius "Tank" Carradine in the second round and running back Marcus Lattimore in the fourth round after both had suffered ACL injuries.