Re: Wallace for....
If we don't have the cap space for Wallace, we certainly don't have the cap space for Welker. Also, I don't want him here. Say Haley does go to Arizona and is the new head coach of the Cardinals - that means a change in offensive philosophy. I'm not sure I'd want to pay 10 million to a slot receiver to play in a new offensive scheme, especially if it's a more vertical and upfield passing game.
I'd trade Wallace for Brandon Flowers, though. Especially if Keenan Lewis is gone.