Unfortunately, the context of these statements has not been provided. To me, the statement, in and of itself, is incomplete. Without the context, I don't know whether 'He has agreed [blue]to[/blue] a three-year deal', or if 'he has agreed a three-year deal' [blue]is better than a five-year deal.[/blue]. How you would diagram "He has agree a three-year deal"? In this sentence, what part of speech is 'three-year deal'? Could it be the object of an implied preposition?
On a side note, in this part of the USA, we do recognize a difference between Cajun French and Parisian French.
Good Luck
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