There was interference that the opponent was making every effort to avoid and the striker would have been able to make a good return, a let is allowed.The player in blue hits a crosscourt that goes very wide and bounces off the back wall. The player in pink does not want to play the ball in case the follow through of the swing hits the opponent. The player in pink would have been able to make a good return and safety is a factor to consider. Therefore a Yes Let is the correct decision.