Former India wicketkeeper-batter Dinesh Karthik said he doesn't think that Shubman Gill has realised the enormity of what it means to be India Test captain as of now. "Shubman is walking into a lion's den," he stated, while referring to India's upcoming five-match Test series against England. "Luckily for Gill, the England bowling attack is very vulnerable," Karthik added.