Impossible. Sky is no longer owned by the Murdochs. It is now owned by Comcast. Had it been owned by the Murdochs, it would've been a possibility. Since both Star and Sky were at their peak in the Murdoch Era.
And besides, Comcast has a bad reputation for its services, especially in the US. The Company Man's Youtube video has a detailed explanation :
Source
So, Sky returning to India is a distant dream now. And the Tatas don't want to ruin their reputation by adding a brand from a notorious entity which has a pathetic record when it comes to serving its customers.