The teams will be playable in most game modes, EA Sports said in an announcement yesterday. The career suite is not one of them. Players on these teams will be available in the transfer database if managers wish to acquire them for their clubs in that mode. However, Mertesacker makes it into the top 10 based on his defensive score, which is rated at 88.
The good news is that you can pre-order now from various places. Certainly, there are FIFA 16 pre-order pages on Amazon UK - buy it here. Game UK is also offering FIFA 16 for pre-order. You can pre-order Cheap Fifa 16 Coins from Zavvi, too. You can also buy FIFA 16 from 365Games.
http://www.fifa16shop.com/