The Packers never spend in free agency. I'd be shocked if they even had Decker in for a visit.
Yeah, GB's a crazy guess (as in a crazy bad guess) at Decker's landing spot. They already have quality WRs and half the purpose of throwing $20M+ per year at a great QB is that they don't need to give $10M/year FA contracts to the likes of Eric Decker. Possible, technically, but I don't see it happening. They're more likely to just re-sign Jones. Nelson and Cobb are both UFAs in 2015 so they have to be looking at one or both of them to bring back as well (depending on what they do with Jones). They also like to draft WRs and let them go if they get too expensive. They've done a good job on that front, but everyone looks better when the QB fits a 6" diameter ball into a 7" window from 15-20 yards away on a rope. Then someone like Jennings goes to Minnesota and puts up Jets #1 WR numbers rather than Packers #1 WR numbers. Go figure.
Indy is a possibility. Though good points were brought up as to why they may shy away, Wayne is entering the final season of his contract, is coming off a bad mid-season knee injury, and at age 35 is a decent candidate to get cut outright to clear another couple million depending on his rehab progress. Even if rehab is going well, they'd be foolish to bank on him coming back as a starter and playing at a super-high level next year when he turns 36 mid-season. Actually thinking about it now, they're a great landing spot for him if they want to spend on the position. Then again, they may just draft someone. They really need help on their OL despite spending some good money there recently. Over-spending badly in the case of Cherilus.
I just think someone like Decker is more likely to go to a team like the Jets or someone in a similar situation. Basically, a team so devoid of really good WRs they are more likely to take a shot and pay him #1 WR money than a team looking to add him to complement an already-productive group. Indy could be a landing spot, but then again they may look to the draft since they aren't in as dire straits for a guy who MUST produce immediately like the Jets. FA WRs like this are more likely to go to the most desperate team than to the best theoretical fit on an already-good offense. It is unusual for a Wes Welker to go to the Broncos. Usually with these higher-priced #2 (or up to 1A type) FA WRs it's Berrian/Jennings going to Minnesota, Houshmandzadeh/Rice going to Seattle, Wallace to Miami, Givens to Tennessee (remember him?), Jerry Porter to the Jaguars, etc. They go to the highest bidder, and typically the highest bidder is the team that needs help at that position the most (provided they have the cap room to make the splash).