SUNDAY, 5:17pm: The Red Sox still have not given up on pulling off a deal for Gonzalez and there remains a chance that they could do a trade without agreeing to an extension, tweets Heyman.
2:45pm: Odds are that Gonzalez won't wind up with the Red Sox, a source tells Morosi (via Twitter), though the reporter cautions that this could change quickly. Meanwhile, a rival executive told Rosenthal (via Twitter) that the possibility of a deal happening won't die unless the Red Sox turn around and sign Adrian Beltre. The third baseman may have lost a suitor this afternoon as it seems that the A's will turn their attention elsewhere.
2:19pm: The possibility of Gonzalez going to Boston isn't dead yet, a source tells Jon Paul Morosi of FOX Sports (via Twitter).
2:00pm: Late Thursday, a Padres source indicated that the club wouldn't field more offers for Gonzalez if the deal with Boston didn't work out, Heyman tweets.
1:56pm: Even though the window is closed for an extension, the two teams can still work out a deal, tweets Rosenthal.
1:43pm: The deal fell through, a source tells Jon Heyman of SI (via Twitter).
1:32pm: Boston might be okay with just laying out parameters with Gonzalez and finalizing a deal during Spring Training if the slugger is healthy, says Joel Sherman of the New York Post (via Twitter).
1:13pm: The BoSox could still make the deal without an extension, provided that the parameters are close, Heyman tweets. Going into overtime may not be an issue as the league understands the significance of the player and the situation, Heyman adds (via Twitter).
1:07pm: As of a couple of minutes before the 1pm CST (2pm EST) deadline, both sides were at a standstill, tweets Alex Speier of WEEI.
12:41pm: Gonzalez's camp doesn't want to discuss an extension unless it happens now, tweets Dan Hayes of the North County Times. He adds that this could be a sticking point in the talks.
12:29pm: Unsurprisingly, there is a strong sense in the Gonzalez talks that the BoSox won't make the trade unless there is an understanding that a deal can be reached, Buster Olney of ESPN tweets. The negotiating deadline is at 1pm CST.
10:11am: CSNNE.com's Sean McAdam and Dan Hayes of the North County Times provide conflicting updates: McAdam tweets that there's a "good feeling" following talks that continued through the night. On the other hand, Hayes tweets that the two sides are at something of an impasse, and there's a chance the trade won't happen. The negotiating deadline is now less than three hours away.
8:26am: Heyman (Twitter link) hears that teams discussing Gonzalez with the Padres told San Diego they only wanted to talk parameters for an extension because of the slugger's shoulder issue. As Alex Speier of WEEI.com explains, however, the surgically repaired shoulder isn't the only reason it might make sense to postpone an official extension - the Red Sox could save millions in luxury taxes by waiting until the season begins to ink a deal.
Meanwhile, an AL executive tells Nick Cafardo of the Boston Globe that he thinks Gonzalez is seeking an eight-year contract worth about $160MM. Cafardo suggests that, while the Sox may not go that high, a compromise seems likely. The negotiating window closes in just a few hours, so we should get some resolution soon.
SATURDAY, 10:34pm: The Red Sox suggested a six-year contract at some point during the negotiations according to Heyman (Twitter links), but they don't want to do a contract on par with Mark Teixeira's eight year, $180MM pact.
9:26pm: Heyman tweets that the Red Sox might be willing to make the trade without signing Gonzalez to an extension. They might actually prefer to just talk about contract parameters now, then see how his surgically repaired shoulder holds up in Spring Training. In the off chance that the trade does not happen, the Padres would keep Gonzalez and not field offers.
8:41pm: In a pair of tweets, SI.com's Jon Heyman says that the two sides are optimistic about reaching a deal before tomorrow's deadline. He adds that even though Gonzalez, David Ortiz, and J.D. Drew are all left-handed hitters, the Red Sox would not be discouraged from pursuing Carl Crawford, another lefty bat.
7:22pm: Nick Cafardo of The Boston Globe reports that the two sides have not yet reached an agreement, but they're still trying. He notes that if they can't work out a contract, the Red Sox could still choose to go forward with the trade if they feel they've made enough progress and are confident they could extend Gonzalez in the future.
5:21pm: With all of the players agreed to and the physical passed, the only thing left before the Adrian Gonzalez trade can be made official is a new contract. Ken Rosenthal of FOX Sports reports (via Twitter) that the first baseman and his new team won't have very long to negotiate; the deadline is 2pm ET on Sunday.