It'd have to be quite the discount, our option is for 35m and Morata turns 30 this year. I'd be fine with 15m-20m, but 35m is crazy.
We paid 19m for a 28yo Mandzukic in 2015, Roma paid 11m for a 29yo Dzeko in 2016, these are the sort of transfers we should be looking for if we want an experienced striker. 30m+ territory should be only for younger players with resale value and lower salaries.