1. The San Francisco 49ers will add Antonio Brown and Earl Thomas, then improve to 8-8 or better.
The Pittsburgh Steelers are likely to trade Brown after a flurry of late-season incidents, and the 49ers are expected to be quite interested. The team claimed that it had made perhaps the best offer to acquire then-Oakland Raiders edge rusher Khalil Mack last summer before he ended up with the Chicago Bears, and it makes sense that it could be similarly aggressive in trying to deal for the ultra-talented Brown.
The Oakland Raiders have more ammo to get a deal done, given their three first-round picks, but the Steelers would prefer to move Brown out of the AFC. The 49ers can offer the fourth pick in the second round. There remains the issue of Brown being investigated by the league for allegedly pushing the mother of his child during an incident in which no arrest was made.
Signing Thomas to play free safety is a natural fit for the 49ers. Former Seattle Seahawks teammate Richard Sherman is pushing for it, and the team's defensive system - mostly cover-one and cover-three - is a copy of what the Seahawks use.
Throwing in two players with budding Hall of Fame credentials to go with the healthy returns of Jimmy Garoppolo and Jerick McKinnon should allow the 49ers to challenge the Los Angeles Rams and Seahawks in the NFC West.