'Football today has changed a lot' doesn't make sense unless it really has undergone a transformation since breakfast.
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'Football today has changed a lot' doesn't make sense unless it really has undergone a transformation since breakfast.
It does make sense, of course, because absolutely everyone understands the meaning.
Using 'today' after a noun is often a synonym for 'nowadays', as it is in that sentence. Putting 'today' at the end of the sentence would change the meaning to 'it happened today'.