JT will undergo an operation on his knee to clean up the bits of floating bone that stopped him playing in last night's defeat in Russia and will be out of action for up to six weeks. he also has a broken toe and cheekbone to deal with.
Ash, who injured himself on Saturday against Estonia could be back in a couple of weeks.
Both will also miss the crucial Champions League match against German outfit Schalke on Wednesday night and the visit to Stamford Bridge on Saturday week of Manchester City.
The next three matches are vital for Chelsea as the seek to recover lost ground in the Premiership race and nab vital home points in the Champions League.