Summary: The free-agent market is thin, and, in my opinion, signing Whitner is, by far, the best option. If not, one of the above-mentioned players could be a suitable, but not equal signing. If Whitner’s market doesn’t get crazy, the 49ers need to try to keep him. In-house potential replacements are C.J. Spillman and Craig Dahl, but neither are considered top options.
Summary: Replacing Brown may be easier than replacing Whitner. There are a ton of decent cornerbacks. Carroll is one of the players the 49ers have checked in on. If the 49ers lose Brown, they could wait out the market and get a decent player or two here. A wild card could be Darrelle Revis, who reportedly either is going to be traded or released, as soon as this week, by Tampa Bay. He will likely be pricey but if something crazy happens, perhaps the 49ers could get involved.
Summary: There are some decent kickers available, but I think Dawson is the best fit and I expect him to be back. If not, any of these kickers could be the fix. Just a guess, but I don’t think it gets to that point.