England remain uncertain over Jimmy Anderson and Mark Wood's availability to face India, after the pair were ruled out of series against Bangladesh due to injury.
A recurrence of Wood's troublesome ankle injury ruled him out of the Test and ODI squads, while England's record wicket-taker in the red-ball format, Anderson, will miss out due to a shoulder complaint.
Jake Ball was drafted into the Test squad on Thursday, with Steven Finn added to the 50-over party.
And director of England cricket, Andrew Strauss, says neither Anderson or Wood will be risked when England take on India in five Tests and three ODIs, beginning in November.
"With bowlers you have to tread carefully," Strauss told reporters after touching down in Bangladesh.
"We are hopeful they will both play a part at some stage in the winter but we just don't know at this stage.
"The message we have been given with both of them is they need more time and the worst thing you can do is rush them back before they are ready. You need to manage them as well as you possibly can.
"At this stage all we are saying is [they will miss] Bangladesh. We just need to see how quickly it develops.
"Jimmy's is quite an unusual injury so we need to just allow it space to rest naturally.
"He has played a lot of cricket over the last six months or so and we know the schedule over the next 12-18 months is very heavy.
"We have to make sure it is completely ready and he is at 100 per cent before he comes back and plays for England."