Why not, we can see an island reversal. But the question is when.
IMO, atleast not on Monday (unless there is some huge gap up open) or will be possible only after some fall or a dip.
NS made a low of 7540.1 and closed at 7568.55
As far as low is concerned, IMO, there are few more numbers/levels below this low that NS has to touch, before any up move.
Secondly between island low and NS last close, there is still quite a lot of difference, so a huge gap up is required to reverse it.
Thirdly it is easier to fill island gap in down move than a normal up move. So the gap up open is the easiest way for such reversal
These are just my readings and I may be wrong.