Even if the Sox fed Nightengale the number, that really won’t matter much in the long run. Let’s say that Nightengale tweets out the Sox offer is 7-year, $210 million. The Phillies will most likely just up that offer to 7-year, $230 million. Then the Sox will be forced to up their offer anyway. Sox and Phillies will get into a bidding war, and end up at that $270 million to $300 million number anyway.
Regardless of how or where or why Nightengale got his information, I just dont see any scenario where Manny signs for anything less than a 7-year, $250 million deal (A little more than $35 million per year). So whether or not the Sox are trying to keep the Phillies offer low, I can almost guarantee the bids will reach that $250 million number at the very least.