AEG has contacted the Vikings, Chargers, Raiders, Rams, and Jaguars about possible relocation for their bid to bring the NFL back to Los Angeles. The story goes on to say the Rams and Jags aren't as likely, and the Vikings essentially need to get a stadium built or they will be the second purple and gold franchise from Minnesota to bolt for SoCal.
Two seems thing clear from this story. First, the effort to bring a NFL Team back to LA is more organized and well funded than any other time since 1995. We can expect there to be a team there sooner rather than later.
Consequently, Ralph's health and well being in the next 2-4 years are critical to alleviating fears of Buffalo being one of those teams. As long as he is alive, the Bills will not be a candidate for relocation. Hopefully, he will live to see some other franchise set up in LA; thus allowing us a few more years until the next round of relocation roulette.