I am not a fan of Vasher. He is hurt to often and hasn't produced in a few years (even while getting thrown at). With the age and injuries at the CB position (Harris, Lee, Blackmon) Vasher is far from a "sure thing". He got away with poor tackling and poor gambles because he made plays. Well, those plays he once made are long gone (except for opposing teams scoring on him) and if they weren't the Bears wouldn't let him go in a division with Jennings, Driver, Rice, Harvin and "Mega-Tron" Calvin Johnson.
I would much rather take my chances on a rookie I could develop and has upside over a injury prone vet like Vasher.
Manning on the other hand would have value, especially as a return man and I like his versatility in the secondary (CB/S). But I don't see Thompson adding any FA this off season.
Dictionary is the only place that success comes before work.
Hard work is the price we must pay for success.
I think you can accomplish anything if you're willing to pay the price