What I meant by afford was that they still had options and time, no real rush to get them in. Not that they were being paid cheaply.
But to your question, wiki says:
"In August 2004, Rivers signed a six-year, $40.5 million contract with the
[SIZE=+0]San Diego Chargers[/SIZE] that included $14.5 million in signing bonuses"
"In August 2005 Rodgers agreed to a reported five-year, $7.7 million deal that included $5.4 million in guaranteed money and had the potential to pay him as much as $24.5 million if all incentives and escalators were met"
So, I guess GB was paying peanuts to Rodgers so they had no financial motive to get him in the game. Probably why they gave Favre so much leeway.