Consider the following premises. For all y, if y plays squash, then y is sleeping. There is at least one y for which if y sleeps, then y is playing squash. For all y, y will not play squash. For all y, if y sleeps, then y is playing squash. Can we infer the following from them? If we can, name the inference rule being used: For all y, if y plays squash, then y is sleeping.
That is one of the premises. Therefore, the answer is yes.