It will be difficult to get a 5-0 because I have always believed that England will be our biggest challenge in this long home season. I know many people said before the start of the season that NZ would challenge India the most but I have never agreed with that opinion. NZ have a decent side but you can't beat this Indian side in India with a decent team. You need to have some sort of X-factor to get over them. England just have amazing depth in their line-up which is one of the main reasons why I believe that they will challenge India the most. Indian lower order have bailed them out on quite a few occasions now in last few tests with the bat. However this time, India will be up against a side who also has a more then decent lower order who can contribute with the bat. Even though their spinners are not as good as Monty and Swann (2012), they are good enough to take wickets against this Indian batting line-up who has tendency to throw away their wickets to spinners.
In the series against NZ, we saw that pitches were not spin friendly and they were supportive for both fast bowlers and spinners as long as they were putting the deliveries in the right areas. So it will totally depend on how England bats against Ashwin and Jadeja. Ashwin wasn't in good form the last time England toured to India which was one of the reasons why England managed to win that series. Ojha bowled well in that series but he just didn't get any support from the other hand and they were out bowled by Swann and Monty.