From the ECB site -
Asked whether the side to play the three-day match at the Nondescripts Cricket Club in the Sri Lankan capital would be the preferred first Test line-up, Vaughan said: “Not necessarily. It is about trying to balance it right.
“There are still a couple of places up for grabs and we have to make sure that, come Kandy on December 1, we get our XI right.
“So there might be a couple of spaces where we can give players a chance and rest a couple of players who have played a lot of cricket recently.
“But ideally you want to play as many players as possible in this three-day game who are going to be playing in the Test match.”
Its a XI a side game. I think the team will be -
Cook, Vaughan, Shah, Pietersen, Bopara, Prior, Swann, Broad, Harmison, Hoggard and Panesar to see whether it's Bopara or Shah and Broad or Harmison.