There are a number of reasons to be happy about this as a Yankee fan. For one, the current rotation is fine. Freddy Garcia has done an acceptable job and David Phelps is waiting in the wings if need be. Andy Pettitte should also be back in time for the playoffs so they are technically seven deep in that area.
Then there is the fact that while Dempster’s ERA of 2.25 is nice it certainly seems unsustainable. For one thing his career mark is 4.31 and his BABIP is .242 suggesting that he’s due for some regression. On top of that a move from the NL to the AL will certainly hurt his ERA.
So holding on to prospects for a guy who is not needed and certainly not guaranteed to continue his current level of success is good news.
The only other big name connected to the Yankees was Chase Headley and it looks like he will be staying in San Diego for the time being. He would have been a nice piece to add, but that would have been a luxury. If the Yankees really like him they can revisit another potential trade for him this offseason.